We are offering usb cup warmer keeps warm drinks at a constant 50-60 degrees centigrade: in the cold winter months, there's nothing better than a hot cup of tea or coffee - and there's nothing worse than a cold cup. With the usb cup warmer hub, the second problem becomes a thing of the past. Simply turn the cup warmer on, place your mug on the plate and it will be kept at a toasty 50-60°c. Perfect whether you need a hot cup of coffee to wake you up in the morning, or a warm cocoa to send you to sleep. Integrated 4 port usb hub: as well as keeping your drinks warm, the usb cup warmer contains 4 usb ports capable of outputting up to 500ma each. So you can plug in your flash drives, data cables and more without having to reach down to your computer, or using the limited number of ports provided by laptops. Please note that using the usb ports will lower the temperature of the heating plate. Led status indicators show when warmer and usb ports are in use: the hub features two led status indicators to show when the warmer is in use (red) and when the usb ports are available (green). This helps prevent accidents caused by touching the hot plate. Please be aware that the element takes some time to cool down, so please be careful when disconnecting the hub. Plug and play compatibility with windows and apple systems: with plug and play compatibility for both windows and apple machines, you can use the usb cup warmer hub without worrying about complicated installation procedures or driver issues. Simply plug the attached usb cable into your computer and you're good to go.