CS351B, Nas Chassis Micro-ATX, Mini-DTX, Mini-ITX, Hot-swap drive trays support up to five 3.5" or 2.5" SAS-12G / SATA-6G drives with two LED indicators for displaying drive status. Drive tray features anti-theft lock design to keep confidential information secured. Supports 8 x 2.5" hard drive and up to 7 x 3.5" hard drives. Accommodates Micro-ATX motherboard and ATX PSUs. Supports up to 368mm (14.5") expansion cards. Front I/O includes USB Type-C x 1, USB 3.0 x 2, combo audio x 1. Ample space for CPU cooling (82mm in height).