Thummmper said "Please research facts before stating false info to people. A very simple google search will tell you most hard drives manufactured are compatible with Mac's. While yes in past Mac has been tough to work on, many reputable NON Apple certified repair shops provide very good after warranty service at very reasonable rates. As a person with near as many years working on computers I have enjoyed learning that Mac has migrated to much more run of the mill parts therefore helping remove the cloud of "only a Mac". With regards to your reference to heat sensors in Mac drives ONLY this was on older drives and with newer models Mac cut costs by using industry standard drives. "
Hopefully you're not repairing people's Mac computers. Jonnie_66 was correct, Apple has actually gone the other way and gone more proprietary in the recent years. Many of there systems can not be upgraded and have memory soldered on. Many Macs now use a proprietary SSD drive(hard drive) that doesn't fit in anything else or visa-versa. You can buy an aftermarket Apple SSD replacement by OWC but it is not an original Apple product. As Macs are a very reliable product and seem to outlast many Windows based PC's, the "older" 3+ years, Macs are the main ones that require repairs or upgrades(most that I've seen last about 10 years). iMacs that have standard hard drives do have a temperature sensor built in, if you replace one with a non-apple HDD you will have to purchase an after market hard drive sensor cable(not an apple product) as a work around. If you don't your system will think it's overheating and the fans will run at full speed. I've had to replace many of these that other idiots have done wrong. Ramon, who used to work at Staples locally and has transferred to the staples depot in Vancouver was the only Apple certified tech in Brandon for several years and I don't know of any at the moment.