Aluratek 4-Port USB 2.0 Auto Sharing Switch Enable four PCs and/or Macs to share any USB device such as scanners, printers, external hard drives, MP3 players & more Fully compliant with USB 2.0 specification with data transfer rate up to 480Mbps Backward compatible with USB 1.1 devices Supports idle time-out switching and automatic print sharing Easy AOD (Access-On-Demand) switching software (Windows only)