Support for 2 X M.2 NVMe SSDs (M-Key) Anti-vibration/grounded springs Tri-angle security keylock designed on the SSD tray Tooless adjuster to install different length M.2 SSD 2 x SlimSAS(SFF-8654) 4i connector 2 x Mini 4pin power connector + 2pin fan jumper x 2 7 x 7 x 1cm internal cooling fan x 1 & 2pin fan connector x 2 Aluminum heat sink & thermal pad on the M.2 SSD carrier LED indication: Power ON - Green, Accessing - Orange blinking