Expansion card for M.2 SSD?

Hello

You can use a third M.2 PCIe 3.0 x4 SSD on a corresponding “PCIe 3.0 x4 on M.2 PCIe SSD” Insert and use adapter card. For this, you need a PCIe 3.0 x4 on M.2 PCIe SSD adapter card that you can plug into the lower PCIe 3.0 x16 slot. Then another M.2 PCIe 3.0 x4 SSD can be used. It is also possible to use an M.2 PCIe 4.0 x4 SSD, which is braked on PCIe 3.0 x4 speed, i.e. to below 4000MB/s.

There is also “PCIe x16 on 4x M.2 PCIe x4 SSD” Adapter cards.

However, you cannot use this if you have used a graphics card in the upper PCIe x16 slot, because there must also be a “PCIe x16 on 4x M.2 PCIe SSD” Adapter card are used. The lower PCIe x16 slot is useless in this case, since it is connected to the B550 chip only with 4 PCIe 3.0 Lanes, so that it is actually a PCIe 3.0 x16@x4 slot, i.e. a PCIe x4 slot in a PCIe x16 slot.

A graphics card would therefore be properly braked in the lower PCIe x16 slot, so that it should be used in the top PCIe x16 slot.

And there is “PCIe x16 on 4x M.2 PCIe x4 SSD” Adapter card all 16 PCIe Lanes of a PCIe x16 slot required to be able to split it to 4 pieces M.2 PCIe x4 SSD’s, it must be plugged into a PCIe x16 slot that is also connected to all 16 PCIe Lanes. A PCIe x16 slot that is only connected to 4 PCIe Lanes does not use anything in this case. On a “PCIe x16 on 4x M.2 PCIe x4” Adapter card would work exactly one M.2 PCIe x4 SSD and the other three would not work if the adapter card is plugged into the lower PCIe 3.0 x16@x4 slot.

Therefore you can only use one more M.2 PCIe SSD on a “PCIe x4 on M.2 PCIe x4” Adapter card.

PCIe 3.0 x4 on 1x M.2 PCIe 3.0 x4 SSD adapter card

You can plug this into the lower PCIe 3.0 x16@x4 slot and then use a corresponding M.2 PCIe 3.0 x4 SSD.

Since the lower PCIe 3.0 x16@x4 slot has to share the PCIe Lanes with the three PCIe 3.0 x1 slots, the PCIe 3.0 x1 slots cannot be used if the lower PCIe 3.0 x16@x4 slot is occupied.

mfG computer tomb