1 x 4-pin Chassis Fan 1 x 24-pin Main 1 x 4-pin +12V 1 x M.2 (Key M) 1 x SATA 6Gb/s 1 x USB 3.2 Gen1 1 x USB 2.0 1 x Clear CMOS 1 x COM Port 1 x Front Panel Audio 1 x M.2 (Key E) 1 x Chassis Intrude