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Windows 7: USB device and windows 7

02 Jul 2013   #1
kenny1999

Microsoft Windows 7 Home Premium 64-bit 7600 Multiprocessor Free
 
 
USB device and windows 7

I find that when I try to plug in any USB device into the USB ports , the windows would give sound, even if the USB device is not plugged into, just the edge of the connector touches the port. Why would that happen? Is it bad to portable HDD?


My System SpecsSystem Spec
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02 Jul 2013   #2
Sub Styler

Windows 7 Ultimate x64
 
 

The motherboard detects USB devices by monitoring power draw on the port, if you create a circuit or a short the BIOS instructs the OS to a hardware change, windows makes a noise and searches for the device. The USB detected noise can be heard even when a "charging only" usb cable is connected (no pins/wires for data). This will either result in windows saying nothing more about the device or returning an error. As to whether it will damage a portable HDD it's unlikely, however possible with mechanical drive. Solid state/flash drives will be safe. If the connection is only brief the drive wont even have time to spin up so will not be damaged crashing down. If the connection is loose, either use a back panel port or replace the front panel connector.
My System SpecsSystem Spec
03 Jul 2013   #3
kenny1999

Microsoft Windows 7 Home Premium 64-bit 7600 Multiprocessor Free
 
 

Quote   Quote: Originally Posted by Sub Styler View Post
The motherboard detects USB devices by monitoring power draw on the port, if you create a circuit or a short the BIOS instructs the OS to a hardware change, windows makes a noise and searches for the device. The USB detected noise can be heard even when a "charging only" usb cable is connected (no pins/wires for data). This will either result in windows saying nothing more about the device or returning an error. As to whether it will damage a portable HDD it's unlikely, however possible with mechanical drive. Solid state/flash drives will be safe. If the connection is only brief the drive wont even have time to spin up so will not be damaged crashing down. If the connection is loose, either use a back panel port or replace the front panel connector.
Thanks very clear. Only one more thing to ask - If the connection is loose, use a back panel port? I don't understand this
My System SpecsSystem Spec
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 USB device and windows 7




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