1. 4 USB connection ports-make your office no longer cluttered, eliminating the clutter of cables 2. Two computers can share 4 devices, a set of 4 USB devices such as keyboard, mouse, printer, burner and portable optical drive 3. You can switch through the buttons, easily operate, and select the USB device computer you want to use 4. -platform support-Windows, Linux system 5. The LED indicator shows the status of the computer, without external power, plug and play Product name: USB 2 in 4 out switch Switching : electronic key switch Hot swap: support Drive: free drive Interface: 2 USB square port input ports; 4 USB A port output ports Advantage: plug and play, no need to drive compact and generous, can connect multiple USB devices size:6.8x4.5x2.2cm Material:metal colour:Black Package Contents: 1 x USB printer sharing device Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.