Please Use Our PCB MatchMaker Below to Find the Right PCB for You!

Select Your Hard Drive Brand to Begin: Seagate Hard Drive PCB Circuit Boards Western Digital WD Hard Drive PCB Circuit Boards Maxtor Hard Drive PCB Circuit Boards Hitachi Hard Drive PCB Circuit Boards Samsung Hard Drive PCB Circuit Boards Other Brands

Maxtor DiamondMax 21 320 320GB STM3320820AS Matches Any Hard Drive Donor PCB Circuit Board

Maxtor DiamondMax 21 320 320GB STM3320820AS Matches Any Hard Drive Donor PCB Circuit Board
Item# Maxtor-STM3320820AS-matching-guide

Product Description

This is the PCB board (circuit board) of a Maxtor DiamondMax 21 Hard Drive


This item will help you find the correct PCB, but don't purchase this item!

Seagate Barracuda 7200.10 Matching guide
Click on the image to use our Guide

We have many many circuit boards for Seagate Barracuda 7200.10 series hard drives.

To help you find the correct replacement circuit board for your hard drive, we have created a circuit board matching guide.

To use this guide, please click here, or click on the image on the left.

Or you can email us at

Item Includes:
circuit board, torx screwdriver and installation instruction sheet


What this board is supposed to do for you:
If your hard drive has stopped working, chances are you have some important data stored on it. Sometimes the hard drive failure is caused by a circuit board failure. This product is made to be an identical and functional replacement for your circuit board, therefore repairing your hard drive and saving you expensive data recovery charges. Please note that hard drive failures are NOT always caused by circuit board failure, this board is not guaranteed to fix your hard drive.

Please Note:
1. This is just the hard drive PCB board, not the whole hard drive.
2. All hard drive PCB boards have been fully tested before shipment, there is no refund policy, but we offer an exchange if the board has obviously been damaged during shipping.
3. If you bought the wrong hard drive PCB board by accident, please inform us a.s.a.p.
4. To ensure compatibility, please follow the steps listed above carefully.

Our testing procedure and FAQs:
Click here to find out about our testing procedure and general FAQs

Shipping Policy:
Click here for detailed information

Closing Comments

Thank you very much for taking the time to look at our site. Remember, if you have ANY questions or concerns, please feel free to email us directly at We reply 99.99% of all emails/messages within 12 hours of receiving them. Thank you again for looking at our site and best of luck repairing your hard drive!