UGREEN Switcher 3.0 High-Speed Transfer USB Switch for 2 PCs, Switches Printers, Mice, Keyboards, Hubs, etc. Manual Switch Printer Switcher USB cable 1.5m x 2 (Included) (PC 2: USB devices 4) Everything in the photos is included (main unit, 2 cables) Used a few times after new purchase, then stored in a closet. There are some scratches from contact with other devices during storage (slightly noticeable due to the piano black finish). Compatibility issues may occur. I don't know if it supports all USB devices. I tested the operation for the listing. External hard drive USB memory x 2 USB headphones Total of 4 devices 4-port USB 3.0 hub - Brand: UGREEN - Number of ports: 4 ports - USB type: USB 3.0 - Color: Black - Power button: Yes Thank you for viewing.