Features: This product supports NVMe M.2 NGFF interfaces to Slim SFF-8611 interfaces, but requires the purchase of additional SSF-8611 interfaces to other devices for use. A common way is to use an adapter card with SFF-8611 to SFF-8639 cable to connect to hard drive. Attention before purchase: Please make sure to confirm the PIN number of your device's Slim SFF-8611 interfaces. There are two types of SFF-8611 interfaces: SFF-8611 4i and SFF-8611 8i. This adapter card is an SFF-8611 4i interfaces! The SFF-8611 (SFF-8612) interfaces is only the interfaces shape, and the data protocol of the interfaces is determined by your mainboard. There are two common types: Sataand NVMe. The SFF-8611 interfaces of this adapter card is the NVMe protocol. This product needs to be plugged into an interfaces that supports PCIe x4 NVMe M.2 NGFF SSD on your computer in order to use it. The M.2 interfaces of PCIe x2 andSata protocol cannot be used! This product has a cutting line in the middle, supporting use at positions 2242, 2260, and 2280 Specifications: Size：Mixed Item: M.2 NVMe to SFF-8612 SFF8611 Adapter Card Support: 2242, 2260, and 2280 Package Includes: 1PC M.2 NVMe to SFF-8612 SFF8611 Adapter Card note: Due to the problems of lighting effects and shootingangles, there will be certain tolerances in the product, please understand. Please allow 0-1cm dimension difference due to different manual measurement.