SilverStone Technology RM23 502, 2U dual 5.25" drive bay ATX rackmount industrial storage server chassis with USB 3.1 Gen1 interface, SST 502

Supports ATX power supplies of up to 180mm depth; Supports 1 x 2.5" SSD and up to 5 x 3.5" HDD 5Gbps USB 3.1 Gen1 interface (downward compatible with USB 2.0 & USB 1.1) Dual 5.25" expansion bay brings flexibility in installing 5.25" devices; Built-in fan bracket which supports up to three 80mm x 38mm fans Supports up to ATX (12" x 9.6") motherboard; Supports 7 low profile expansion slots Reserved mounting holes for sliding rails which can be easily installed. Can be used with RMS03-24 rail (rail slide sold separately)