2 computers share USB devices, allowing 2 computers to share a printer Copying files does not require repeated plugging and plugging, making the efficiency faster; reducing the number of plugging and plugging of U disks and extending the service life Compared with the traditional body button switching , the Union USB switch has a new desktop controller function. You only need to connect the desktop controller and place it on the desktop to easily switch controls. Supports FOR , , Vista, LnuX, etc. No need to install drivers, just plug it in and it will work Two computers share printers, keyboards, mice, U disks, etc., avoiding frequent plugging and unplugging, reducing costs and improving efficiency. Material: plastic colour: black Package Contents: 1 x 2 Input 4 Output Switcher Only the above package content, other products are not included. Note: Light reflection 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.