... as mouse pad, play music, 4 port usb hub, stereo speaker,with thermometer and clock, blue LED ... install, plug and playBuilt-in 4 USB ports for external USB devices connectionNo need to clutter your desk ... brightening up your computer working spaceSpecifications:One upstream port (USB - A male) and four downstream portsWith blue LED ... included1 X Mouse mat pad 4 ports USB hub Blue LED Mouse Pad Mat 4 Port ...