Universal serial bus testing device

摘要

A USB testing device is provided for an electronic device having a USB port. The USB testing device includes a first USB control unit, a second USB control unit, and a micro-processor. When the first USB control unit has received power, the first USB control unit processes a connection test via a first data port. When the second USB control unit has received the power, the second USB control unit processes a connection test via a second data port. When the USB testing device is connected to the USB port, the micro-processor provides power to the first USB control unit. When the first USB control unit receives power, the first USB control unit provides power to the second USB control unit after waiting for a predetermined period of time. The electronic device determines whether the first and second data ports are operating properly.

主权项

1. A universal serial bus (USB) testing device for an electronic device having a USB port, comprising:
a micro-processor, receiving a power when the micro-processor is connected to a power port of the USB port; a first USB control unit, receiving the power from the micro-processor, and processing a first connection test for the electronic device via a first data port of the USB port; and a second USB control unit, receiving the power from the first USB control unit, and processing a second connection test for the electronic device via a second data port of the USB port, wherein when the first USB control unit receives the power, the first USB control unit provides the power to the second USB control unit after waiting for a first predetermined period of time, and wherein the electronic device determines whether the first data port is operating according to the first connection test, and determines whether the second data port is operating according to the second connection test.