When it comes to upgrading your computer’s storage, M.2 SSDs are a popular choice due to their fast read and write speeds. However, not all M.2 slots are created equal, and it’s important to know whether a particular M.2 SSD will fit in your computer’s M.2 slot.
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What is an M.2 Slot
An M.2 slot is a small interface for connecting solid-state drives (SSDs) to a computer’s motherboard. It is named after the form factor of the SSDs that use this interface, which are typically called “M.2” drives.
M.2 Drives Form Factors
M.2 drives come in different lengths and widths, which correspond to different form factors:
- 2230
- 2240
- 2260
- 2280
- 22110
The numbers in the names refer to the length of the drive in millimeters (mm). For example, an M.2 drive that is 22mm wide and 80mm long would be called an “M.2280” drive.
M Key vs B Key Slots
M.2 slots can also have different “keys,” which determine which types of SSDs can be used with them:
- An M key slot supports both SATA and NVMe SSDs.
- A B key slot only supports SATA SSDs.
If you try to install an NVMe SSD into a B key slot, it will not fit because the keying prevents it from being inserted. Similarly, if you try to install a SATA SSD into an M key slot, it may not work because the slot may not support SATA.
PCIe Versions
Another factor to consider is the PCIe version of the M. The PCIe version determines how many lanes (data paths) are available for data transfer:
- A PCIe 2.0 x2 slot has two lanes and can transfer data at up to 1GB/s.
- A PCIe 3.0 x4 slot has four lanes and can transfer data at up to 4GB/s.
If you install an M.2 SSD that requires more PCIe lanes than your slot provides, it will still work, but at a reduced speed.
Conclusion
So, do all M.2 slots fit The answer is no. You need to make sure that the form factor, keying, and PCIe version of the M.2 SSD match the specifications of your computer’s M.2 slot in order for it to fit properly and function correctly.
If you’re unsure whether an M.2 slot, check your computer’s documentation or contact the manufacturer for more information.
