| 摘要 |
An Express Card interface adapter for desktop computers, laptop computers or portable electronic devices such as personal digital assistant (PDA) that allows an Express Card interface device to use an universal serial bus (USB) interface system. The Express Card interface adapter includes an Express Card interface connector unit, a voltage adjusting circuit and an USB interface connector unit. The voltage adjusting circuit reduces the power source voltage provided by the USB interface system to a voltage suitable for operating the Express Card interface device.
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