usb cup warmer with usb hub, usb warmer, usb gadget

1. 4 ports USB hub

2. Supports both full-speed 12Mbps and low-speed 1.5Mbps transfer rates

3. Keep coffee/tea/drink warm at 50 - 60*C

4. Truly plug & play automatic installation, Easy installation, no driver required

5. Use USB power, no batteries needed

6. On/off switch and LED indicator

7. Heating zone diameter: 75mm

8. Build-in +5V DC jack

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usb cup warmer with usb hub, usb warmer, usb gadget