Feature: 1. PCI express 16x interface, only supports M key M.2 PCI Express SSD, does not support B key, B+M key M.2 SATAIII SSD. 2. It does not change properties such as speed, only changes the interface type, without software or drivers. 3. The bracket size is 22x30mm, 22x42mm, 22x60mm, 22x80mm M.2 NGFF SSD. 4. Compatible with any operating system (provided that the operating system is compatible with your hard drive). 5. Professional heat dissipation structure design, easy to install, stable performance. Specifications: Item Type: Riser Card Hard Drive Size: Approx. 22 x 30mm / 0.9 x 1.2in, 22 x 42mm / 0.9 x 1.7in, 22 x 60mm / 0.9 x 2.4in, 22 x 80mm / 0.9 x 3.1 inch M.2 NGFF SSD Supported Hard Drives: M. 2 PCI Express 4x SSD Applicable system: Compatible with Windows/Linux/MAC Package List: 1 x Riser Card 1 x Cooler 6 x Screws 2 x Dual - 1 x Heatsink Adhesive Tape