What is NVMe™ and why is it important? A Technical Guide. When did nvme ssd come out

(As an aside, this is the reason why there are performance differences between long, contiguous blocks to read and write – called sequential data – and randomly blocking blocks down, whether or not you want, across sectors / tapes – called random reads / writes .)

M.2 keys

Solid state drives (SSDs) released in recent years have become faster and more capable of handling large amounts of data. However, their full capabilities are hampered or limited by the interfaces to which they are connected. Third-generation Serial ATA interfaces, designed for much slower mechanical hard drives, operate at a maximum native transfer rate of 6 Gb / s.

The Mini-SATA (mSATA) interface, although designed specifically to provide the smallest enclosure for SSDs, is limited by the SATA 6 Gb / s link. The M.2 standard, a specification for internally mounted computer expansion cards, was created to address the limitations of mSATA and provide more options for compact cards, including SSDs of various sizes and capacities. The M.2 was originally called the Next Generation Form Factor (NGFF) and was then officially renamed the M.2 in 2013. M.2 enhances the mSATA standard, which uses the physical layout and connectors of the PCI Express® Mini Card. As the “successor” to mSATA, M.2 provides higher performance and capacity while minimizing the footprint of the module.

The M.2 SSD module is connected to the host via a SATA interface or a PCI Express (PCIe) lane. While M.2 supports both SATA and PCIe, an M.2 module can only be inserted into one of the two interfaces, so check your motherboard’s documentation to make sure the module fits and mates with the correct socket on your motherboard.

Differences Between an M.2 and mSATA SSD

Both are high-performance SSDs designed for small devices like laptops and tablets. MSATA interface used to provide the smallest size of SSDs. However, this is limited by the SATA 3.0 link speed of 6 Gb / s and the maximum capacity of 1 TB. The M.2 form factor arose from the need to have multiple options for cards with a small form factor, including SSDs of various sizes and capacities, and the ability to further expand capacity. M.2 provides higher performance while minimizing the footprint of the module. M.2 SSDs are available in longer modules and with a reciprocal component population to provide greater storage capacity in a tight space. No power or data cables required.

M.2 SSDs support both SATA and PCIe interfaces. The SATA version 3.2 specification, gold version of August 2013, standardizes the SATA M.2 version as a new format for mass storage devices and defines its hardware layout. Details on the PCIe version can be found in the PCI-SIG M.2 Rev. 1.1.

They physically look different and cannot be plugged into the same sockets. The photos below show ATP M.2 and mSATA SSDs.

SATA or NVMe?

SATA remains one of the most used interfaces in industrial and corporate applications, so M.2 SATA modules are the optimal choice for those who want compatibility with existing systems as well as hot-swap and hot-plug convenience. M.2 modules designed for the SATA interface will operate in accordance with the latest third generation SATA standard, i.e up to 6 Gb / s.

Enterprises and customer systems that need faster speeds can take advantage of non-volatile Express or NVM Express® (NVMe ™) memory, an interface specification specifically developed for NAND flash and next-generation SSDs. NVMe uses existing PCIe technology to efficiently serve the growing bandwidth needs of enterprise and client systems. An NVMe-based M.2 SSD module installed on a PCIe x2 lane will run at 15.75 Gb / s, while a module installed on a PCIe x4 lane will run at 31.5 Gb / s – a huge leap in speed and performance.

While our testbed’s M.2 slot supports both PCIe and NVMe, yours may not. Shown here is WD’s black NVMe SSD – a very worthy drive that delivers transfers better than its competitor Samsung 970 EVO.

The Evolution of NVMe

The first flash-based SSDs used legacy SATA / SAS physical interfaces, protocols, and form factors to minimize changes to existing hard disk drive (HDD) -based enterprise servers / storage systems. However, none of these interfaces and protocols were designed for high-speed storage media (ie, NAND and / or persistent storage). Due to the interface speed, the performance of the new storage media, and the proximity of the CPU, the next logical storage interface was PCI Express (PCIe.

The PCIe slots connect directly to the CPU for memory-like access and can run a very powerful software stack. However, early SSDs with a PCIe interface did not have industry standards or enterprise features. PCIe SSDs used proprietary firmware which was particularly difficult to scale the system for a variety of reasons including: a) device firmware startup and maintenance; b) firmware / device incompatible with other system software; c) not always the best use of available line and processor proximity; and d) no value-added functionality for corporate workloads. The NVMe specs came mainly because of these challenges.

What is NVMe?

NVMe is a high-performance, NUMA-optimized (Non Uniform Memory Access) and highly scalable storage protocol that connects the host to the memory subsystem. The protocol is relatively new, feature-rich and designed from the ground up for non-volatile storage media (NAND and persistent memory) directly connected to the CPU via the PCIe interface (see diagram # 1). The protocol is built on high-speed PCIe lines. The PCIe Gen 3.0 link can offer transfer speeds over 2x than the SATA interface.

Diagram # 1 CPU connected to SSDs via PCIe interface compared to I / O controller and HBA

There are of course different ways to use Flash, and there are many different architectures on the market – from fully “All Flash Arrays” (AFA), “Hybrid Arrays” (which are a combination of Flash and spinning disk), to more traditional systems that simply replaced spinning disks with Flash drives (without major architectural changes).

NVMe SSDs

Non-Volatile Memory Express (NVMe) technology was introduced in 2011 to solve various bottlenecks of the SATA interface and communication protocols. NVMe technology uses the PCIe bus instead of the SATA bus to unleash the enormous bandwidth potential of storage devices. PCIe 4.0 (current version) offers up to 32 lanes and can theoretically transfer data up to 64,000 MB / s compared to the 600 MB / s limit of the SATA III specification. The NVMe specification also allows 65,535 command queues, which can have up to 65,536 commands per queue. Recall that SATA-based SSDs are limited to one queue with a depth of only 32 commands per queue. NVMe technology offers enormous potential for storage devices through increased performance, efficiency and interoperability with a wide range of systems.

SSD Form Factors

While hard drives are typically 2.5 or 3.5 inches wide, and most SATA-based SSDs are 2.5 inches wide by 7mm thick, NVMe drives adopt a number of new formats that allow them to fit in a variety of devices.

• M.2 – The reduction in physical disk size seen in M.2 guarantees the future ubiquity of these storage devices. 22 refers to the width and 30/42/80/110 to the length in millimeters. Currently, M.2 2280 supports SATA, it is also the most popular NVMe SSD format for NVMe. As technology develops and shrinks, this may change.
• U.2 – These are more expensive, powerful, and durable storage devices that are typically found in data centers / enterprise storage environments.
• Add-in PCIe cards – These high-performance NVMe SSDs have found their way into systems where M.2 slots have yet to be adapted.

Remember how I said Flash has certain features that allow you to radically change the way data centers store and retrieve data? This is why.

SATA SSDs vs. NVMe SSDs

Knowing well the highest performance potential of NAND-based SSDs, even when they first appeared, it was clear to the industry that a new bus and protocol would eventually be needed. However, since the first SSDs were relatively slow (and bulky), I found it much more convenient to use an existing SATA storage infrastructure.

Although the SATA bus has evolved to 16 Gb / s from version 3.3, almost all commercial implementations remain 6 Gb / s (around 550 MB / s after communication load). Even version 3.3 is much slower than what today’s SSD technology is capable of, especially in RAID configurations.

Sandisk Extreme Pro offers exactly the same performance as the WD Black NVMe. Because wait for it – it’s the same drive. The drive uses four PCIe lanes for a theoretical maximum bandwidth well over 3 GB / s.

As a replacement for the SATA bus, it was decided to use bus technology with much higher bandwidth, which was also already in place – PCI Express or PCIe. PCIe is the underlying data transport layer for graphics cards and other expansion cards. From generation 3.x it offers multiple lines (up to 16 for use with any device in most computers) that support nearly 1 GB / s each (985 MB / s).

PCIe is also the backbone of the Thunderbolt interface, which is starting to make a profit with external gaming graphics cards, as well as external NVMe storage that’s almost as fast as internal NVMe. Intel’s refusal to die of Thunderbolt was a very good thing many users are starting to discover. Even though Intel made this technology available on the USB forum to make it easier to implement, it is still rarer than you might hope.

Of course, PCIe storage is ahead of NVMe by a few years. However, previous solutions were limited by older data transfer protocols such as SATA, SCSI, and AHCI, which were developed when the hard drive was still the pinnacle of storage technology. NVMe removes their limitations by offering low-latency commands and multiple queues – up to 64K. The latter is especially effective as the data is written to shotgun-style SSDs, scattered over chips and blocks, rather than continuous over and over like a hard drive.

The NVMe standard has evolved to the current version 1.31, adding features such as the ability to use a portion of the computer’s system memory as a cache. We’ve already seen that the cache used in the super-cheap Toshiba RC100 we recently reviewed forgoes the onboard DRAM cache that most NVMe drives use, but still works well enough to give your NVMe system a kick in your pants for your daily chores.

What you need to get NVMe

Of course, it’s best if your system already supports NVMe and has M.2 slots, but you can still add an NVMe drive to any PC with a PCIe slot using an adapter card for $ 25. All the latest versions of major operating systems provide drivers and no matter what age your system is, you will have a very fast disk on your hands. But there is a catch.

To take full advantage of the NVMe SSD, you must be able to boot the operating system from it. This requires BIOS support. Sigh. Most older mainstream BIOSes do not support booting from NVMe, and most likely never will. It’s just that the vendors don’t have any benefit from adding it, and a very real downside: You’re less likely to update a system that has been updated with NVMe unless you’re playing PC games or doing something really CPU-intensive, like the 2160p edition (4K) / 4320p (8K) video.

An M.2 NVMe SSD, such as the relatively inexpensive and very fast (except for very large transfers) Samsung 970 EVO, can work in a M.2 / PCIe slot or in a regular PCIe slot (x4 or higher) with a cheap adapter card.

All NVMe SSDs sold in the consumer space use the M.2 format, although there are other connectors (see below). But just having an M.2 slot does not guarantee NVMe compatibility. The M.2 was designed to support USB 3.0, SATA, and PCIe, and most early M.2 slots only supported SATA. Read the user manual for your system or motherboard, or check it online. Note that the MSATA socket, which is the precursor to M.2, looks very similar.

You can’t tell if it supports PCIe and NVMe by looking at a slot, but you can tell a PCIe x2 slot from a PCIe x4 slot. The first, called the B-key (the key is an elevation that connects to the pin gap on the disk), has six contacts separated from the rest, while the second, the M-key, has five contacts separated from the rest on the opposite side. There are no hard and fast rules, but many B-key slots were only SATA. If you have a B / M key socket with both sets of contacts separated, which is the most common these days, you’re golden. They are also sometimes referred to as slot 2 and slot 3.

Melissa Riofrio / IDG

While our testbed’s M.2 slot supports both PCIe and NVMe, yours may not. Shown here is WD’s black NVMe SSD – a very worthy drive that delivers transfers better than its competitor Samsung 970 EVO.

If your slot fails you, it’s time for the $ 25 PCIe M.2 adapter card that I mentioned. The Plextor M9Pe and others are available already mounted on PCIe cards as ready-to-use products.

As an end user, you should avoid 2.5 inch NVMe drives. They require a U.2 SFF-8639 (Small Form Factor) connector. The U.2 connection includes four PCIe Gen 3 lanes, two SATA ports, sideband channels, and 3.3V and 12V power, but can only be found in adapters and enterprise-class storage systems.

If you’re using one of the few Windows PCs that support Thunderbolt (many of Asus motherboards do), you can use an external Thunderbolt PCIe enclosure to add NVMe to your system. It works like a charm on a Thunderbolt Mac, which is new enough to run High Sierra.

From its omniscient view, the robot can “see” all blocks at once. Of course, nothing moves, because it is semiconductor. However, as it stands, this is how we currently use Flash with a robotic arm that responds to SCSI commands. We still have to deal with our needs one at a time.

The NVMe Interface Protocol

NVMe stands for Non-Volatile Memory Express and refers to the way data is moved, not the shape of the disk itself. The main way it differs from the existing SATA standard is by using the motherboard’s PCIe interface to get a noticeably faster data transfer speed than what it is capable of. Depending on the manufacturer of your NVMe drive, you can see speeds as high as five or six times faster than the SATA-based counterpart.

There are several NVMe drives that are designed to fit into a standard PCIe motherboard slot, similar to a graphics card, but most NVMe drives use the M.2 format. Also, given their faster speeds, NVMe drives typically cost more than their standard 2.5-inch SSD counterparts, just as SSDs tend to cost more than mechanical hard drives for the same amount of space.

If you plan on using an M.2 drive when building or upgrading your gaming PC, it’s important to remember whether you’re purchasing a SATA drive or an NVMe drive. Your motherboard may not have the correct M.2 slots for both types (SATA and NVMe M.2 drives often have slightly different keys), and even if they do, you don’t want to waste money on a more expensive NVMe drive if your motherboard of choice can access to data only using the SATA protocol (not every motherboard supports PCIe data transfer).

Speaking of price, it’s also worth mentioning that the speed boost provided by the NVMe protocol is mainly only for sequential reads and writes of the data, not for random reads and writes. This means that you will only really notice a noticeable increase in speed if you use your computer to perform specific, heavy tasks, such as editing 4K video footage or regularly transferring large amounts of data from one drive to another. Random reads and writes to an NVMe drive are technically a bit faster than a SATA drive, but if all you’re using your computer for is gaming and / or everyday tasks, you really don’t need to jump for the more expensive NVMe M.2 drive.

Finding The Right M.2 Drive For Your Budget

Once you understand your needs, you can start browsing M.2 SATA drives and M.2 NVMe drives. Again, if your only concerns are games and standard PC usage, you should be fine with an M.2 SATA drive. However, if you want to get the most out of your hardware’s computing speed, or plan to do anything that requires fast sequential read and write speeds, an NVMe drive is worth choosing.

M.2 and NVMe drives are becoming more popular – and cheaper – all the time, and as of 2020 they are on the verge of becoming the standard recommendation for new PC builds. While you can save some money by using a traditional hard drive or SSD, the difference isn’t too big – and for many builders it’s worth spending a little extra to have the latest technology and reduce the amount of… clutter matters.

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Author Nate Hohl

Nate Hohl has been a gamer since he was old enough to hold an SNES controller, and his passion for gaming and writing made game journalism a natural choice. He enjoys dealing with current problems in the gaming industry, as well as probing the minds of his readers in order to engage and inform them. In addition to games and writing, he is also an avid reader, a bit of a history buff, and a die-hard martial arts enthusiast.

Join the discussion 10 Comments

M.2 NVMe drives change lives. Sure there’s that really little screw you have to deal with when assembling, but otherwise you get more speed, sleek design, no wiring to clean, and if you get a drive just for the OS / software the price is easy to justify in making a change. That’s all I’m using for new builds now. I even purchased an M.2 to SATA adapter to clone and backup when needed.

Nate, I am wondering if you could comment M.2 NVMe drives versus RAM disks. I play No Man’s Sky and just today one of the users posted information about the improvements they got thanks to Dimmdrive Steam. They created a 23 GB drive with 32 GB of RAM installed. I think Dimmdrive allows you to load the entire game. I don’t know what graphics card they used. Is RAM not slowing down random read / write?

When these kinds of things appear in the article, they only serve to confuse “M.2 and NVMe drives”.
It’s like comparing the two terms – it’s a bit like contrasting apples and oranges – and you can do it, but for what purpose?
My thought is this: an M.2 drive might have an “XX” interface or an “NVMe” interface. What could “XX” be? Maybe SATA.
Is it true that an M.2 drive can be EITHER SATA or NVMe, however ALL NVMe drives are M.2? Has anyone ever heard of an NVMe drive that was NOT M.2?
I wish people would use terminology with more concern for accuracy.

In response to Raymond Leiter, yes, I’ve seen NVMe drives that don’t have an m.2-factor but instead look more like regular SSDs in a caddy.

Components such as the newer Sun / Oracle X-series servers can be equipped with 2.5-inch NVMe hot-plug drives mounted in the front bays of the server.

great point !! Moreover, if it’s an M.2 drive that uses SATA or NVMe (protoco) interface, you’d better be an SSD… Everything gobbledygook !! Just say’ 🙂

Feel free to listen / watch the NVMe BrightTalk webinar, which has much more technical detail, sponsored by the NVMe Promoter Board and involving some of the brains behind the technical work. Oh, I’m there too (as a moderator of course).

Enter NVMe

This is where things get very interesting.

NVMe is a standardized interface for PCIe SSDs (but note that NVMe is not PCIe!). It was designed from the ground up, especially for the characteristics of Flash and NVM technologies.

Most of the technical details are available at NVM Express: nvmexpress.org, but here are some highlights.

First, while SCSI has one command queue, NVMe has up to 64,000 queues. Moreover, each of these queues can have up to 64,000 commands in turn. Simultaneously. Simultaneously. That is, at the same time.

That’s a lot of goddamn commands given out all at once!

Let’s take a look at our programmable robot. To complete the analogy, instead of one arm, our fearless robot has 64,000 arms, each capable of handling 64,000 commands.

Damn it! That’s a lot of weapons!

Second, NVMe simplifies these commands to just the basics Flash technologies need: 13 to be exact.

Remember how I said Flash has certain features that allow you to radically change the way data centers store and retrieve data? This is why.

Flash is fast now. NVMe can do this even faster than we are doing today. How fast? Very fast.

Just an example, but still impressive

This, of course, is just an example, as enterprise data centers have more workloads than just triggering 4K random reads. Still, it’s a pretty cool example:

• For 100% random reads, NVMe has 3 times better IOPS than 12 Gb / s SAS
• For 70% of random reads, NVMe has 2 times better IOPS than 12Gb / s SAS
• For 100% random writes, NVMe has 1.5 times better IOP than SAS 12 Gb / s

What about sequential data?

I have to love efficiency

Again, this is only one scenario, but the results are still impressive. First, NVMe provides read performance greater than 2.5 Gb / s and write performance of ~ 2 Gb / s:

• 100% of readings: NVMe has 2x 12Gb / s SAS performance
• 100% write: NVMe has 2.5x SAS performance of 12 Gb / s

Of course, living in a data center is about more than IOPS! The command structure efficiency I mentioned above also cuts CPU cycles in half and also reduces latency by more than 200 microseconds than SAS 12 Gb / s.

I know this sounds like I’m picking a lousy 12 Gbps SAS, but at the moment it is the closest to an NVMe type architecture. The reason for this is the association of NVMe with PCIe.

Relationship with PCIe

If there’s one place where there’s likely to be confusion, it’s right here. I have to admit that when I first started delving into NVMe I was a bit confused too. I understood what PCIe is, but it was much harder for me to figure out where NVMe and PCIe intersect as most of the time conversations tend to mix both technologies in discussion.

Then I understood it: they do not intersect.

When it comes to hot data, the industry is seeing a progressive migration to the processor. Traditional hosts contain an I / O controller that is located between the processor and the storage device. By using PCIe, however, you can eliminate this I / O controller from the data path, making the flows very, very fast.

Due to its direct connection to the CPU, PCIe has some nice advantages, including (but not limited to):

• Lower latency
• Scalable performance (1 GB / s per lane, and PCI 3.0 x8 cards have 8 lanes – that’s what “x8 stands for)
• Increased I / O (up to 40 PCIe lanes per CPU socket)
• Low power

This PCIe performance as shown above is significant. The placement of an SSD on this PCIe interface was and is inevitable. However, it needed a standard way to communicate with SSDs via the PCIe interface, otherwise the implementations would be available to everyone. Interoperability matrices would be a nightmare!

NVM Express is a standardized way to communicate with an NVM storage device, backed by an ever-growing consortium of hardware and software vendors that make life easier and increase productivity through Flash technologies.

Think of PCIe as the physical interface and NVMe as the protocol for managing NVM devices using that interface.

Since the robot arm needs to move forward and backward, it can only handle one series of commands at a time. Even if you could tell him to take the block from conveyor belt 1 and 3 at the same time, he would not be able to do so. He would have to queue the commands and get to each one in turn.

Converters

Item 89370

PCI Express Card > 1 x internal M.2 NVMe

Connectors:
1 x 67 pin M.2 socket with key M
1 x PCI Express x4, V3.0
1 x LED contact strip
Interface: PCIe
It supports M.2 modules in 2280, 2260 and 2242 format
with M key or B + M key based on PCIe
Maximum height of elements on the module: 1.5 mm,
use of modules assembled on both sides supported
Bootable, with UEFI version 2.3.1
Supports NVM Express (NVMe)

Connectors:
1 x 67 pin M.2 socket with key M
1 x PCI Express x4, V3.0
1 x LED contact strip
Interface: PCIe
Supports M.2 modules in format 2280, 2260 and 2242 with key M or key B + M based on PCIe
Maximum height of elements on the module: 1.5 mm, possibility of using modules mounted on both sides
Bootable, with UEFI version 2.3.1
Supports NVM Express (NVMe)

Item 62696

Converter U.2 SFF-8639 > M.2 NVMe Key M

Connectors:
1 x U.2 SFF-8639 male >
1 x 67 pin M.2 socket with key M
Interface: PCIe (2 or 4 lanes)
It supports M.2 modules in 2280, 2260, 2242 and 2230 format
with M key or B + M key based on PCIe
Maximum height of elements on the module: 1.5 mm,
use of modules assembled on both sides supported
Jumper to set 2 or 4 M.2 SSD lines
LED lights for power and activity
Supports NVM Express (NVMe)
Short circuit protection, inrush current suppression, overheating protection

Connectors:
1 x U.2 SFF-8639 male >
1 x 67 pin M.2 socket with key M
Interface: PCIe (2 or 4 lanes)
Supports M.2 modules in format 2280, 2260, 2242 and 2230 with key M or key B + M based on PCIe
Maximum height of elements on the module: 1.5 mm, possibility of using modules mounted on both sides
Jumper to set 2 or 4 M.2 SSD lines
LED lights for power and activity
Supports NVM Express (NVMe)
Short circuit protection, inrush current suppression, overheating protection

Item 62704

3.5 ″ SATA 22 pin converter / SFF-8643 NVMe >
1 x M.2 M key + 1 x M.2 B key

Connectors:
1 x SATA 6 Gb / s 22 pin female (for SATA SSDs)
1 x SFF-8643 36 pin female (for 2 or 4 lane PCIe SSDs)
1 x 67 pin M.2 slot with key M (PCIe SSD)
1 x 67 pin M.2 key B slot (SATA SSD)
Interface: SATA / PCIe (2 or 4 lanes)
It supports M.2 modules in 2280, 2260, 2242 and 2230 format
with M key or B + M key based on PCIe or SATA
Maximum height of elements on the module: 1.5 mm,
use of modules assembled on both sides supported
sATA 15 pin power connector always needed
LED lights for power and activity
Supports NVM Express (NVMe)
Maximum output current: 4 A (PCIe) and 3 A (SATA)

3.5″ Converter SATA 22 pin / SFF-8643 NVMe > 1 x M.2 Key M + 1 x M.2 Key B

Connectors:
1 x SATA 6 Gb / s 22 pin female (for SATA SSDs)
1 x SFF-8643 36 pin female (for 2 or 4 lane PCIe SSDs)
1 x 67 pin M.2 slot with key M (PCIe SSD)
1 x 67 pin M.2 key B slot (SATA SSD)
Interface: SATA / PCIe (2 or 4 lanes)
Supports M.2 modules in format 2280, 2260, 2242 and 2230 with key M or key B + M based on PCIe or SATA
Maximum height of elements on the module: 1.5 mm, possibility of using modules mounted on both sides
sATA 15 pin power connector always needed
LED lights for power and activity
Supports NVM Express (NVMe)
Maximum output current: 4 A (PCIe) and 3 A (SATA)

Cables

Item 84819

Cable SFF-8643 male> U.2 SFF-8639 male
+ SATA power connector

Cable SFF-8643 male > U.2 SFF-8639 male + SATA power connector

Connectors:
SFF-8643 male >
U.2 SFF-8639 male + SATA 15 pin power connector
Data transfer rate up to 2 GB / s (PCI Express rev. 2.0)
possibly 4 GB / s (PCI Express version 3.0)
Supports NVM Express (NVMe)
Cable cross section:
30 AWG data line
24 AWG power line
Length (without connectors):
Data cable ca. 50 cm
Power cable ca. 5 cm

Also available as article 84821 with ca. 75 cm

Connectors:
SFF-8643 male >
U.2 SFF-8639 male + SATA 15 pin power connector
Data transfer rate up to 2 GB / s (PCI Express rev. 2.0) or 4 GB / s (PCI Express rev. 3.0)
Supports NVM Express (NVMe)
Cable cross section:
30 AWG data line
24 AWG power line
Length (without connectors):
Data cable ca. 50 cm
Power cable ca. 5 cm

Also available as article 84821 with ca. 75 cm

Item 84822

SFF-8643 male angled> U.2 male SFF-8639 cable
+ SATA power connector

Cable SFF-8643 male angled > U.2 SFF-8639 male + SATA power connector

Connectors:
SFF-8643 male angle >
U.2 SFF-8639 male + SATA 15 pin female connector
Data transfer rate up to 2 GB / s (PCI Express rev. 2.0)
possibly 4 GB / s (PCI Express version 3.0)
Supports NVM Express (NVMe)
Cable cross section:
30 + 32 AWG data line
18 + 24 AWG power line
Length (without connectors):
Data cable ca. 75 cm
Power cable ca. 10 cm

Connectors:
SFF-8643 male angle >
U.2 SFF-8639 male + SATA 15 pin female connector
Data transfer rate up to 2 GB / s (PCI Express rev. 2.0) or 4 GB / s (PCI Express rev. 3.0)
Supports NVM Express (NVMe)
Cable cross section:
30 + 32 AWG data line
18 + 24 AWG power line
Length (without connectors):
Data cable ca. 75 cm
Power cable ca. 10 cm

Item 84829

Extension cable U.2 SFF-8639 male > U.2 SFF-8639 female

Connectors:
U.2 SFF-8639 male >
U.2 SFF-8639 female
Data transfer rate up to 2 GB / s (PCI Express rev. 2.0)
possibly 4 GB / s (PCI Express version 3.0)
Supports NVM Express (NVMe)
Cable cross section:
30 AWG data line
24 AWG power line
Length (without connectors) approx. 50 cm

Also available as article 84830 with cable length approx. 100 cm

Connectors:
U.2 SFF-8639 male >
U.2 SFF-8639 female
Data transfer rate up to 2 GB / s (PCI Express rev. 2.0) or 4 GB / s (PCI Express rev. 3.0)
Supports NVM Express (NVMe)
Cable cross section:
30 AWG data line
24 AWG power line
Length (without connectors) approx. 50 cm

Also available as article 84830 with cable length approx. 100 cm

Item 83387

Cable Mini SAS HD SFF-8643 > Mini SAS HD SFF-8643

Connectors:
Mini SAS HD SFF-8643 male
Mini SAS HD SFF-8643 male
Serial Attached SCSI (SAS) 12 Gb / s specification
Data transfer rate up to 12 Gb / s
Cable gauge: 30 AWG
Cable for internal connection
Cable length (without connectors) approx. 100 cm