We have Various USB Cup Warmer for you options, please contact us for detailed information. Features of DX-USB001: --4 USB 1.1 ports a type female connectors downstream 1 USB b type male connector upstream with a cable --Support both full-speed 12Mb/sec and low-speed 1.5Mb/sec transfer rates --Chains up to 127 USB devices --Individual port over-current protection --Provide up to 500mA per port sufficient for diverse devices --Truly plug & play automatic installation --DC jack for selectable System requirements --IMAC, G3, G4 or Book with available USB port. --IBM PC 48D*4-100MHz or higher --OS:Win95/SE/ME/2000/XP Features: --Keep coffee/tea/drink warm at 50-60? --Easy installation, no driver required, plug & play --Rated power:2.5W-5V DC --With on/off switch --Red LED indication when warmer is turned on. --Quality insulation material around the metal hot plate prevents burns. --USB powered, no batteries needed.