This is a 750GB 7200RPM 3.5-inch hard drive for desktop machines. Aftermarket hard drives may have incompatibilities with temperature sensors on iMacs.
661-4382 | Hard Drive 3.5" 320GB 7200 |
661-4383 | Hard Drive 3.5" 500 GB 7200 |
661-4384 | Hard Drive 3.5" 750GB 7200 |