EM2-5001 NVME Protocol: Support M-KEY, B+M KEY SSD, Support PCE-Ex4/x8/x16 slot and M-KEY M. 2 interface, Support 2230/2242/2260/2280 single hard drive.;
SA3034M SATA Protocol: Supports NGFF* SATA protocol drives only, Support 2230/2242/2260/2280 SSD, PCI-EX1 Slot.;
EM2-5003 NVME/SATA Protocol: Support 2230/2242/2260/2280/22110 dual SSD, Comes with 2U baffle for small and large cases.;
EM2-5003 B NVME/SATA Protocol: Baffle with heat sink holes, Support 2230/2242/2260/2280/22110 dual SSD, Comes with 2U baffle for small and large cases.;
Warm Tips: B-KEY M. 2 SATA protocol requires a cable to connect to the motherboard SATA port. (Not included)