I replaced a bad Quantum ProDrive 20MB drive in my SE/30 with a 500MB Apple/Quantum ProDrive LPS 540S. I had to make an adapter for the LED, as the connectors are different. It came out of a Power Mac 6100, but worked great.
You can find them on that Auction site.. (Sorry, don't know the forum rules about mentioning other sites...)
You can find them on that Auction site.. (Sorry, don't know the forum rules about mentioning other sites...)