Features: Two m.2 ssds expansion at the same time for 2230/2242/2260/2280/22110 Support M.2 M-KEY NVME protocol ssds and Optanes support M.2 PCle protocol expansion cards and devices. LED soft light indicator When the disk is pluggeds in and powereds on, the green light is on, and the green light flashes when reading and writing. The read rate of PCIE4.0 raids O mode can reach 14000+Mb/s. This product can run 2 NVME at the same time. But the motherboards must support PCIE signal splitting. Using highend pcbs circuit board, surfaces gold platings process, good continuitys, strong wear resistance, antioxidation, high fire rating. Specifications: Materials: pcbs Size:12x11x2cm/4.72x4.33x0.79inch Package Includes: 1PC two M.2 NVME to PCIE Controller Card note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.