TideLog Posts Tagged “USB bypass”

Western Digital make really good hard drives, but where their Elements, Passport and MyBook drives are concerned, they’ve taken a wrong turn. The 2.5″ versions all have proprietary PCB’s on the drives themselves, so there’s no standard micro SATA data and power connectors like you’d expect. The USB connector and LED, plus the interface controller, are on the single board as well! This means you can’t just take the drive out and connect it to another USB to SATA enclosure.

A lot of very modern WD Elements, MyBook and Passport enclosures are now also encrypted, meaning the data can only be accessed when the control board is functioning correctly. In this article I’ll show you how to recover data from a WD Passport (laptop sized drive) enclosure, if the USB connector gets damaged.

1. Disassemble the enclosure, remove the drive, then remove the PCB from the bottom of the drive using a Torx screwdriver.

2. Flip the drive board over, you’ll see the following capacitors. Remove them using a soldering iron or a heatgun, being careful not to overheat or damage anything:

usb-only-western-digital-drive-capacitors

3. Next you need to take a standard SATA connector from another drive, or from a parts supplier (eBay has them in droves, search for COMAX SATA connector). Once you have it, take a look at it, you’ll see long pins and short pins. All the long ones are GROUND pins:

sata-connector-ground-pins

4. From the back side of the PCB (the componentless side which faces away from the drive when fitted), you will see pins E71, E72, E73 and E74, these belong to the SATA data pins. The other four pins marked with a red square belong to ground pins:

usb-only-western-digital-drive-E-pins

5. Now solder everything together, using this pinout:

E71 – Tx+
E72 – Tx-
E73 – Rx-
E74 – Rx+

The SATA standard uses two lines, a positive and negative, for Data TX (Transmit), and two for Data RX (Recieve), each having a separate ground on the ground lines. Use my picture below as a wiring reference:

usb-only-western-digital-drive-finished-wiring

Now all you need to do is use a standard USB cable to power the drive (if your connector is broken you can try soldering the power lines of a USB cable to the port power pins), connect via SATA to your PC, and it should work. NOTE: This WILL NOT work if your drive uses encryption, as that runs through the USB data lines, because we’re bypassing it, it won’t work.

You may get some “USB device not recognized” errors. Try connecting the SATA drive to a SATA hotplug port, connecting the data cable first, then the power, once Windows has started. Hotplug ports are usually purple or orange, it depends on the board manufacturer, Gigabytes are purple.

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