Tripp Lite 16-Port USB Charging Station Hub w/ Syncing, 5V 40A (200W) USB Charger Output, 2U Rack-Mount charging station 16 x 4 pin USB Ty... U280-016-RM2U - Corporate Armor
Amazon.com: 10 Port USB 3.1 Gen I Hub (5Gbps) - 19 Inch 1U Rack Mount : Electronics