This product supports NVMe M.2 NGFF interface to Slim SFF-8654 interface, but need to purchase cables for SSF-8654 interface to other devices before using it The most common is to use the adapter card with SFF-8654 to SFF-8639 cable to connect U.2 hard drive Please make sure the number of PINs of your device's Slim SFF-8654 interface. Slim SFF-8654 interface has 38PIN and 74PIN. This adapter card is a 38PIN interface The Slim SFF-8654 interface is only the shape of the interface. The data protocol of the interface is determined by your motherboard. There are three common types: SAS, and NVMe. The SFF-8654 interface of this adapter card is the NVMe protocol This product needs to be inserted into the interface of your computer that supports PCIe x4 NVMe M.2 NGFF SSD before it can be used! The M.2 interface of PCIe x2 and protocol cannot be used Hign-concerned Chemical:NONE (The product appearance and printed words depending on the batch, but this does not affect use) Color: As Shown Material: PCB Package Contents: 1 * M.2 to Slim SFF-8654 Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.