The 2.5" hard drive in the Maxtor OneTouch 4 Mini isn't a Maxtor drive at all. It's a Seagate Momentus 5400.5 LD25.2 hard drive.

Here is the Seagate product overview to the Momentus 5400.2 hard drive, model number ST980210AS

Removing the EMF shield reveals a small PCB that plugs directly into the SATA and power connections of the Momentus 5400.5. It doesn't even have a physical connection to the RFI shield -- it just hangs off the back of the drive itself. The SATA connections to the drive are soldered to the PCB itself.

The controler board's chip is made by Initio. It is a Initio INIC-1605 USB to SATA Bridge Chip