Features:
This product supports the installation of one U2 SFF-8639 hard drive on the PCIe NVMe M.2 SSD interface of the machine, but the buyer needs to purchase SSF-8643 to SFF-8639 cable separately.
The hard disk signal cable runs directly through the PCIe NVMe M.2 SSD slot of your machine, and conversion does not require a chip, without any limitations on hard disk performance, etc.
Supports installation in three positions: 2242, 2260, and 2280 (PCB board can be cut).
This adapter card converts the motherboard M.2 port to SFF-8643 port.
Only support connecting U.2 SSD through SFF-8643 to SFF-8639 data cable, this product does not include cable.

Specifications:
Product Name: NVME M.2 to SFF-8643
Product size: 8 * 2.2cm
Weight: 6g
Color: Black

Package include:
1 x adapter card

Notes:
Please make sure that your motherboard has PCIe NVMe M.2 SSD slots and does not support SATA M.2 NGFF SSD slots. If the interface is not supported, it will not be able to be used.
If you want to group RAID, please make sure to use two hard drives with the same specifications and model to ensure consistency in hard drive performance. Can you group raid? It's up to your motherboard to decide, it's not related to the adapter card, and we cannot provide technical support.
Only SSF-8643 to SFF-8639 wire connection is supported for use with U2 SFF-8639 SSD.
U. 2 SFF-8639 SSD is not a SAS interface, don't confuse it.