Features: PCIe x4 interfaces to Slimelines SFF8654 interfaces! Only sell adapter cards, cable not included! This product supports PCIe x4 interfaces to Slimelines SFF8654 interfaces, but buyer need to purchase additional SSF8654 interfaces switches to other devices for use. Support use adapter card with SFF8654 to SFF-8639 cable to a hard drive. Increase data transfer speed with this kit, converting PCIe to SFF 8654 for reliable connection, offering a simple way for your storage needs. Attention before purchase: Please make sure to confirm the PIN number of the Slimelines SFF8654 interfaces on device. There are two types of Slimelines SFF8654 interfaces: 38PIN and 74PIN. This adapter card with a 38PIN interfaces Specifications: Type: PCIe x4 to Slimlines SFF 8654 Adapter Card Interfaces：38PIN Size: Mixed Package Includes: 1PC PCIe x4 to Slimlines SFF 8654 Adapter Card note: Due to the problemsof lighting effects and shootingangles, there will be tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.