For iMac (Early 2006).

Model MA199xx/A iMac 17-inch 1.83GHz Intel Core Duo/512/160/SD/BT/AP

Model MA200xx/A iMac 20-inch 2GHz Intel Core Duo/512/250/SD/BT/AP

Part numbers of disks:

2Z691-5736

2Z691-5607