Hi everyone!

On my PCchips M577 mobo, I've been struggling to make a single HDD be jumpered as "Cable Select" and be detected as "Master" or "Slave" depending on it's placement on the PATA ribbon/cable.

Initially I was using old 40-pin cables, but then realized they didn't have the "CSEL" wire#28 skipping the middle connector. So I switched to an 80-pin cable.. as those actually have the feature implemented correctly (and double checked with a multimeter). But still, the motherboard behaves the same.

Unfortunately as long as it's single, and it's jumper is set to "Cable Select", it's always seen as "Slave" no matter where it's connected.
Only when I connect another HDD that is specifically jumpered to "Master" or "Slave", does the "C.Sel" HDD conform as opposite.

What I Basically wanted, was to set as CSEL my main OS HDD; but be able to pop another HDD into the RACK, and configure that as Slave or Master/Bootable depending on my needs, without needing to open the case for re-jumpering.

Any ideas??