CN026S Brand new and high quality product. USB 1.0/2.0 are both compatible. Correspond to computes and 1 USB a-type hook-up to USB device. 2 ports USB Sharing Switch help to optimize your working environments. 2 USB B-Type corresponds to computers and 1 USB A-Type connects to USB device (like printer) USB 1.1/2.0 compatible. No extra power required. 2 manual switch buttons It is used for small office or home office. Operating environment: Mac OS X， Windows 2004， Windows 2006， Windows 98SE， Windows Me， Windows XP. Package Details Weight: 87.74 g Size: 16.5*15*3.5 cm Package Includes 1 × Auto 2 Port USB2.0 Sharing Switch 1 × Disk driver 1 × User Manual