usbcwarmer, 1support windows95/98/ME/XP 2no driver required ,plug and play 3CE,ROHS are optional OEM,ODM ,LOGO are welcome 220V coffee WarmerUSB Cup Warmer/usb mug warmer/usb promotion:The USB port support 2.0 version or 1.1 version.Individual port over-current protection.USB powered, easy installation, no driver required, plug and playKeeps drink cool and warm, cavity temperature can be up to 10 ...