Monday, 6 July 2015

usb - Will cutting only the Power Lines damage the Data Lines or the Device?


A USB 2.0 Cable should have 4 cables. They are the Vcc, Data+, Data- and Ground.


Will only disconnecting the Vcc OR Ground Wires damage the Connected Device or the Data Wires?


I currently have a USB SD Card reader that I like to Disconnect and Connect. The reader is mounted on the table, so to disconnect the reader, I would plug off the USB Cable connecting the reader and the computer.


To solve this problem, I would like to place a switch in the power lines, but I wonder if this will break the device since the Data cables are still connected but the power lines are disconnected.


Any answer will be Appreciated. Thanks in Advanced




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