Headphone Holder with 4 USB Ports: USB 3.0 Port x 1 + USB 2.0 Port x 3, allows you to connect keyboard, mouse, flash drive, mobile hard drive, etc. Plug and play, high-speed data transfer up to 5Gbps. Note: The USB hub can not use for charging your devices, only for data transfer. 360 Degrees Adjustable: The headphone mount features a 360-degree swivel hanger that supports multi-directional adjustment for improving convenience and versatility.