Qnap - Tr-004 4-Bay Pedestal Expansion Model (TR-004) - CPU: Micro processor with hardware RAID, Drive Bay: 4 x 3.5-inch SATA 3Gb/s, Connectivity: USB 3.2 Gen 1 port, 1 x Type-C USB 3.2 Gen 1 (USB 3.2 Gen 1), Form Factor: Tower, Dimensions (HxWxD): 168.5 × 160.2 × 219 mm, Hard Drive Type: 4 x 2.5-inch or 3.5-inch SATA 3Gb/s, Fan: 1 x 120mm, 12VDC