For Hitachi PCB HDD 110 0A90233 01 main chip OA71256 Hard Disk Circuit Board | eBay
Anatomy of a Hard Disk Drive - Hardware Secrets
Burnt PCB board for hard drive 640G - Desktop & Mobile Drives - WD Community
Complete Disk, CHIP: 0A71261, DK7SAA200, 2TB, 3.5", SATA - DSMCZ
Definition of chips vs. disks | PCMag
Seagate SATA Hard Drive Disk HDD ST32000528AS ST31000524AS PCB 100535537 REV ABC | eBay
External Hard Drive Enclosure, Portable JMS578 Controller Chip High Speed 6Gbps Mobile Hard Disk Box Supports 6TB UASP Acceleration with USB Line Plug and Play Ready for Business Travel(Black) : Amazon.co.uk: Everything