Features: fresh and advantageous This Clever Device will keep your drink warmth and likewise involves 4 extra USB ports. To use smoothly plug the Device right into a spare USB port on your computer. Ergonomic Design Highly Portable Device. for Windows 98SE XP Vista (Not 64 Bit Versions), for Mac OS eight Specifications: Plug for Play Installation. Individual port over latest for protection. Powered via USB port. four Port High Speed USB Hub. Red/Green LED Indication. Power 2 5V for DC. Color: As images exhibit Package includes: (Without retail package) 1 USB Tea Coffee Cup Mug Warmer OOTDTY