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5 pin USB HDD case proprietary connector layout
5 pin USB HDD case proprietary connector
Cable wiring diagram for USB cables used on some portable HDD cases.

Enclosure Pin
Name

Enclosure Pin
Number
Direction Host Pin
Number
Host Pin
Name
Description
VCC 5 --- 4 VCC +5v Power
D- 4 <--> 3 D- Data -
D+ 3 <--> 2 D+ Data +
GND 1 --- 1 GND Ground

This odd connector is used on some cheaper USB HDD enclosures. It's similar to the SIL connectors used for headers. The numbering may be reversed to what you have for USB; I arbitrarily numbered the pins.  

 

4 pin USB A receptacle connector layout
4 pin USB A receptacle connector
According to 4 reports in our database (3 positive and 0 negative) the USB 2.0 Disk connector cable pinout should be correct.

Is this pinout
USB 2.0 Disk connector cable visual pinout:click to enlarge
Source(s) of this and additional information: http://dev.gentoo.org/~redhatter/misc/usbhdd-pinout.png, http://dev.gentoo.org/~redhatter/misc/usbhdd-pinout.svg
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