Use this switch to replace all keyboard shortcuts or key combinations to control your computer easily and quickly. It can be used for gaming, factory testing, controlling instruments, etc. Use a USB foot switch to control your computer with either of your feet. It is equivalent to a standard USB HID keyboard. Pre-program key or key functions on the pedal by software. Color: Black Material: Plastic Allows you to connect more than one switch to your computer via USB ports. You can access the multi-key function Compatible with Dos / 2000 / XP / Vista / Win 7, , Linux Dimension (L x W x H): approx. 4 x 2.5 x 1.5 inch / 10 x 6 x 4 cm Cable Length: Approx. 67 inch / 170 cm Package Contents: 4 pc Foot Switch 4 x CD Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.