Supermicro CSE 745BTQ R920B, Full Tower, Server, Black, ATX, EATX, micro ATX, 4U, Fan fail, HDD, Network, Power, 8x 3.5 inch/2.5 inch SAS/SATA, 2x USB 3.0, 3x Middle 8 cm (5000 rpm) PWM Fans & 2x 8 cm (5000 rpm) PWM Fans, 4U, 920 W, 3x 5.25 inch External HDD Drive Bays & 8x 3.5 inch/2.5 inch Hot-Swappable HDD Drives