USB 2.0 SWCH 4-TO-1 ROHS 4 SYS SHARE 1 USB DEVICE The SIIG USB 2.0 switch 4-to-1 hot swapping feature allows you to connect/disconnect USB devices without first powering down your system. This switch is designed for USB devices including printers, scanners, hard disk drives, cameras, CD-ROMs, zip drives and more. This USB switch supports device switching via Hot Key (Windows only), software (Windows only) or manual switching button and allows you to share USB devices between PC and Mac systems simultaneously.