The SWB0249 is USB 2.0 compliant and enables two hosts (PCs or MACs) to share a USB device or hub on a one-at-a-time basis. The peripheral can be assigned to a computer either manually or with hot keys (plug-n-play). Unique advanced management is available through a Windows-based application (included) that can limit or extend the sharing capability between one or two computers (software works on PC only).Click here to see a four port version.