| 摘要 |
The invention provides a kind of UPS with a built-in USB. The invention consists of a cover, a control circuit of UPS, a USB hub circuit, an electric transformer and a rechargeable battery. The cover has at least one control button and signal light. The control circuit of the UPS has a USB power conversion circuit to transform 12V current of the UPS to 5V current power for working voltage supply by the USB hub circuit. The UPS connects to computer devices through a USB cable and utilizes a power control software on the computer to monitor power supply of the UPS.
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