Some time ago I bought hard drive enclosure. To my surprise recently I’ve found out that read operation is giving random corrupted data, in other words if you copy data from IDE HD connected to that enclosure, your fill will be corrupted on target media. Without any hope that I will get some answer, I wrote an e-mail to enclosure chipset vendor – JMicron. To my second surprise I got immediate response from very kind person Alex Lee working in that company. He was very prompt and professional and eventually helped to fix the problem, which was enclosure vendor design issue rather than chipset. I will share with this information just in case if some one else need it.

The enclosure box I bought is below. The model NTY-M35HD. I bought it from South Korean local market online, through gmarket.co.kr.

The chipset used is JM20337.
Some PCB pictures of my enclosure.

And here goes recommended patch, click on the picture to see full size. Basically you have to remove resistor R15 4.72k.

Right after patch I have created a batch file for continuous reading / comparing over 2 days and not a single error.

So I want to thank Alex Lee for his great work and JMicron company for amazing products which I believe are leading in the market.

Cheers!