Thank you, everyone, for weighing in. I'm sorry it has taken me this long to respond. I made an account to post here and then promptly, like a moron, forgot which forum site I had posted on. But I worked it out and now I'm back!
You all are right - the 512Ke does not have a SCSI port, only a floppy port. I had the Mac Plus and the 512Ke out at the same time and got them mixed up. The Mac Plus does have the SCSI port.
Both of the hard drives, Cutting Edge and MacBottom, are indeed SCSI drives - though the MacBottom is a weird one, it has one SCSI cable emerging directly from the box [with a DB25 connector on the end] and one additional DB25 port for chaining.
I sort of answered my own question by getting carried away by curiosity and opening up the case of the Cutting Edge (the non working drive). I cut my fingers and made a grand mess all round, including damaging the power connector in the process of detaching it from the hard drive, but hey, it was a learning experience. Turns out the CE (I can't speak for the MacBottom) has an absolutely terrible internal design such that, once you've taken out the screws to get the old drive out, you will *never get them back in again*.
I consigned the carcass (case and drive) to my workbench in case I feel like attempting further exploration, but the state of the drive reminds me of that old joke explaining why the story about Santa visiting every house on Xmas eve defies the laws of physics. "Conclusion: If Santa ever existed, he's dead now."
I do not believe I inherited any MacBottom floppies along with the drive, but if I ever locate one, I'll be sure to pass it along.
You all are right - the 512Ke does not have a SCSI port, only a floppy port. I had the Mac Plus and the 512Ke out at the same time and got them mixed up. The Mac Plus does have the SCSI port.
Both of the hard drives, Cutting Edge and MacBottom, are indeed SCSI drives - though the MacBottom is a weird one, it has one SCSI cable emerging directly from the box [with a DB25 connector on the end] and one additional DB25 port for chaining.
I sort of answered my own question by getting carried away by curiosity and opening up the case of the Cutting Edge (the non working drive). I cut my fingers and made a grand mess all round, including damaging the power connector in the process of detaching it from the hard drive, but hey, it was a learning experience. Turns out the CE (I can't speak for the MacBottom) has an absolutely terrible internal design such that, once you've taken out the screws to get the old drive out, you will *never get them back in again*.
I consigned the carcass (case and drive) to my workbench in case I feel like attempting further exploration, but the state of the drive reminds me of that old joke explaining why the story about Santa visiting every house on Xmas eve defies the laws of physics. "Conclusion: If Santa ever existed, he's dead now."
I do not believe I inherited any MacBottom floppies along with the drive, but if I ever locate one, I'll be sure to pass it along.