IDE to SATA converter slow speed

[-sandro-]

Hello,
I just got this http://www.aliexpress.com/item/1Pc-...Adapter-Converter-for-DVD-CD/32448595307.html to connect an old maxtor 6l250r0 to my current PC.
I don't why but I'm getting a very slow speed, around 4-5MB/s read speed and if I try to write something on it it just hangs with 100% usage.

I thought that these converters were just interfaces not controllers so they don't actually influence speed that much. So what do you think it is?

I'm using a ASrock z77 pro3 if it helps.

 

[Elixer]

They are controllers, as for what is causing the slow speed, it could be that controller, or any number of things, cables, power, the device itself.

 

[-sandro-]

They are controllers, as for what is causing the slow speed, it could be that controller, or any number of things, cables, power, the device itself.

So I can find the controller model?

 

[Elixer]

So I can find the controller model?

For what?
It isn't a controller that you supply custom drivers to, that is handled internally my the chip on the board itself.