• M 2 2280 Ssd

M.2 Solid State Drive: 360.00: Lenovo ThinkPad 11e (4th Gen) M.2 Solid State Drive: 219.99: Lenovo ThinkPad 13: 1x 2280 SATA III: 459.90: Lenovo ThinkPad 13 (2nd Gen) 1x 2280 PCIe 3.0 x4 NVMe (M key) Lenovo ThinkPad 25: 1x PCIe NVMe M.2 slot (2280, M-key) Lenovo ThinkPad E450: no M.2 slots: 670.60: Lenovo ThinkPad E460: no M.2 slots: 558.88: Lenovo ThinkPad E470: no M.2 slots: 549.90.

Most solid-state drives released within the last year or so have been too fast for the bus they're connected to. The 6Gbps SATA III spec was finalized in the days when rotational hard drives still ruled and SSDs were rare, ludicrously expensive, and relatively unreliable.

There are a couple of different standards that have been created to solve this problem, and they both solve it in the same basic way. One, SATA Express, uses the same physical connector as older SATA drives but uses PCI Express lanes rather than the SATA bus to boost storage speeds. The other, which will be more common in space-constrained mini-desktops, all-in-ones, and Ultrabooks, is called M.2 (previously NGFF, for 'Next-Generation Form Factor').

M.2 is interesting not just because it can speed up storage with PCI Express lanes, but because it can use a whole bunch of different buses too; it stands to replace both mSATA and mini PCI Express, two older standards that have been used for SSDs and Wi-Fi cards in laptops for a while now. Intel's new Broadwell CPUs and their chipsets include native support for M.2 and PCI Express boot drivers—neither PCIe-connected storage (hi Apple) nor the M.2 connector itself are new, but beginning with Broadwell systems each of those two things will become much more common.

Let's start with the physical connector and the things that connect to it. There's a lot to unpack, starting with the fact that there's more than one kind of M.2 connector, more than one type of interface that can be used with M.2, and more than one kind of M.2 card.

1. Buy Crucial MX500 250GB 3D NAND SATA M.2 Type 2280SS Internal SSD - CT250MX500SSD4. Kingston A400 240G Internal SSD M.2 2280 SA400M8/240G - Increase Performance. Please do check to make sure your laptop or PC M.2 slot support SATA or NVMe, This is a SATA M.2 SSD.
2. Aug 07, 2017  When using the PCI bus instead of the SATA bus, M.2 devices can transfer data at anywhere from 50% to approximately 650% faster than standard SATA, depending on the capabilities of the motherboard and the M.2 card itself. If you have the opportunity to use an M.2 SSD on a motherboard that supports PCI generation 3.

Getting to know M.2

Pictured at the top of this article are four different M.2 cards. The one on the left is a combo Wi-Fi and Bluetooth card. The next one to the right is a Sandisk SSD that uses the SATA bus. The next one is an Intel SSD that also uses SATA. The one on the right is a Samsung SSD that can use up to four PCI Express lanes.

Pay attention to two things as you compare and contrast these cards. First, the physical connector on each card is different; each card has different cutouts in the bottom and exposes different pins. Second, the cards are of different lengths and widths. All of this is accounted for in the M.2 spec (PDF).

The different connectors signify different M.2 'module keys.' Each key exposes a different set of interfaces to each card—M.2 can connect directly to the PCI Express bus, but different pins can be used to connect to the USB 2.0 and 3.0 buses, SATA III, DisplayPort, and a variety of other less-prevalent storage buses. Cards with one notch at the bottom are keyed for one specific kind of connector. Cards with two notches can be used in two different kinds of connectors.

Above is a picture of two M.2 slots on the motherboard of an HP Stream Mini. The slot on the left uses module key E, and the one on the right uses module key B. The Wi-Fi card is keyed for slots A and E, so it fits in the left slot with no problems. The Intel SSD is keyed for slots B and M, so it fits in the right slot. The Samsung SSD is keyed for slot M, so it won't fit in either of the Stream's slots.

The table above lays out the keys in common use today—there are others, mostly placeholders to be called into service as newer buses and interfaces are introduced.

Note the four- or five-digit numbers paired with each slot. These are actually codes to refer to the physical dimensions of each card; the first two digits specify the width in millimeters and the second two or three digits specify the length. Our Wi-Fi module is 16mm wide and 30mm long, or 1630. Two of our SSDs are 22mm wide and 80mm long, or 2280. The other SSD is 22mm wide and 42mm long, or 2242. All motherboard slots are 22mm in width, even the ones attached to 30mm-wide cards.

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All current keys can give cards access to two PCI Express lanes, but otherwise interface compatibility is all over the place—so far, it's been pretty easy to guess what kind of peripheral you're dealing with based on the key it uses. Wi-Fi and WWAN cards tend to use keys A and/or E, since they only need the PCI Express or USB 2.0 buses and only need 30mm in length to fit all their key components. SATA SSDs and SSDs that use two PCI Express lanes tend to use keys B and M to maximize compatibility, since both connectors can deliver both SATA III and two PCIe lanes. The very fastest SSDs tend to be M-keyed since it's the only one that delivers four PCIe lanes.

This is a lot to digest, but it's most of what you need to know to understand M.2. There are some other stipulations around the physical thickness of the cards that you can read about in the documentation, but they aren't as important to our discussion today.

The key system isn't always foolproof—our A- and E-keyed Wi-Fi module will physically fit into the B-keyed SSD slot even though the computer won't recognize it there. M.2 is certainly more confusing than the mPCIe and mSATA specs, but in the end it's more flexible. Components can access many different buses through one small internal connector, and you've got a lot of different physical card sizes to play with instead of being tied to either a 'full-height' or 'half-height' card.

The worst thing about M.2 right now is a general scarcity of components. OEMs buying parts directly from manufacturers probably have more choices, end users buying M.2 cards from Newegg or Amazon will find that they have few options, especially compared to the selection of mSATA and mPCIe components. That will change as M.2 goes mainstream and those older connectors begin to fade. Broadwell is a big step forward in that transition.

M 2 2280 Ssd

Many Z97 motherboards have M.2 connectors, so you can install a small yet fast SSD right onto the motherboard. Pretty convenient, isn't it? There are 2 kinds of M.2 drives - PCIe and SATA. And M.2 connectors on motherboards support both modes. Except when they don't.
I'm preparing for an upgrade, so I was gathering information on modern motherboards. And I stumbled upon something I didn't know was possible: the M.2 connector on the Asus Z97-A works only in the PCIe mode, which renders it incompatible with many M.2 drives. Apparently, they ran out of SATA ports on this motherboard. The first reason it's so surprising is that it's rare - most motherboards with M.2, including cheaper models from ASUS, support both modes. The second reason is that it's buried deep in the specifications on the official site and isn't reflected at all on the sites of some retailers, including Newegg. Didn't expect this kind of thing from ASUS, so beware.
One more aspect with M.2 drives is length, with 2280 being the longest. Some older motherboards don't support 2280.
Edit: Oh, one more thing that bothered me - probably even more problematic, but easier to notice. Many motherboards have the second PCIe x16 slot, running at x4. It's easy to notice - except there may be a line buried in the specifications: 'The PCI Express x1 slots will become unavailable when a PCIe x4 expansion card is installed'. So if I get it right, add a PCIe x4 expansion card, and you can't use even something as pedestrian as a PCIe sound card, rendering two slots useless. That's on lower end Z97 boards from Gigabyte. And here's the line from ASUS: 'The PCIe x1_1, PCIe x1_2 slots share bandwidth with PCIe x16_2. The PCIe x16_2 slot runs at x2 mode as default.' So you're getting PCIe x16 running at x4 - except not necessarily. Again, many retailers simply say 'PCIe x4'.