Optimal Shop Multifunctional Computer Desktop PC Switch Home Computer Desktop Computer Case Switch with Two Usb and Audio-Black Dual boot computer keys, and more than a single button switch life more than doubled! Damage can continue to use a single key, does not affect the normal business of Internet cafes, super practical. With two USB2.0 interface, the equivalent of a USB HUB, super affordable! With an audio interface and a microphone interface, the same applies to home users. Attractive appearance, pale bluish light boot, warm and elegant. Delicate butterfly fly volume, rarely occupy desk space.