Features: This product supports the installation of one SFF8639 hard drive on the PCIe NVMe 2 NGFF of machine, but buyer need to purchase SSF8643 to SFF8639 cable separately. The hard disk signal cable goes directly to your machine PCIe NVMe 2 NGFF slot, and conversion not require a chip, with no restrictions on hard disk performances, Supports installation in three positions: 2242, 2260, and 2280 ( board can be cut, please make sure to testing it before cutting. Once cut, there is no support for refunds, returns for any reason) Please make sure that your motherboards have PCIe NVMe 2 NGFF slot and not support SATA 2 NGFF slot. Please consult official customer services for details; Only supports usings SSF8643 to SFF8639 cable to connect SFF8639 . Specifications: Material:Plastic NVMe 2 NGFF to SFF8643 Adapter Option Type:M2 NGFF to SFF8643 Adapter,SFF8643 to SFF8639 Cable Package Includes: 1pc 2 NGFF to SFF8643 Adapter note: Please allow 1-2cm errors due to manual measurement,please make sure that you donot mind befores you order. Due to the differences between different monitors, the picture may not reflect the actual item color.