What Are the 3 Types of M2 Slots?

When it comes to computer hardware, there are a lot of different components that make up the whole system. One of these important components is the M2 slot, which is used to connect various types of solid-state drives (SSDs) to the motherboard. However, not all M2 slots are created equal – there are actually three different types of M2 slots that you might encounter when building or upgrading a PC.

1. M Key

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The first type of M2 slot is known as an M Key slot. This is the most common type of M2 slot, and it’s typically found on newer motherboards that support PCIe 3.0 or higher. M Key slots have a single notch in the center of the connector, which allows them to accommodate both SATA and PCIe SSDs.

If you’re looking to install an SSD in an M Key slot, it’s important to note that you’ll need to match the keying on your SSD with the keying on your motherboard. Most SSDs will be labeled as either “B+M key” or “M key” – the former will work in both B and M Key slots, while the latter will only work in an M Key slot.

2. B Key

The second type of M2 slot is known as a B Key slot. These slots have two notches – one near the center and one near the end – which are designed to accommodate SATA SSDs. B Key slots are typically found on older motherboards that only support PCIe 2.0 or lower.

While B Key slots won’t be able to accommodate PCIe SSDs like their M Key counterparts, they’re still a great option if you’re looking for a fast and affordable storage solution for your older system.

3. B+M Key

Finally, we have the B+M Key slot – also known as a “compatibility” slot. As its name suggests, this type of slot is designed to support both B and M Key SSDs. B+M Key slots have a single notch near the center of the connector, which allows them to accommodate both types of SSDs.

While B+M Key slots aren’t as common as M Key slots, they’re still a great option if you’re looking for maximum compatibility when upgrading your system.

To summarize, there are three types of M2 slots that you might encounter when building or upgrading a PC: M Key, B Key, and B+M Key. Each type of slot has its own unique features and compatibility requirements, so it’s important to do your research and choose the right type of SSD for your specific needs.

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