First post, by W.x.
Why Gigabyte GA-6BXC rev 1.7 has only 40 wire PATA connectors while UDMA-33, but Gigabyte GA-6BXC rev 2.0 has 80 wire PATA connectors (with missing pin) while still being UDMA-33?
https://theretroweb.com/motherboards/s/gigaby … ga-6bxc-rev-1-7
https://theretroweb.com/motherboards/s/gigaby … ga-6bxc-rev-2-0
Is this typical for BX boards, that some of them have only 40 wire compatible IDE connectors, while some of them 80 wire ( while still not UDMA-66)? Why manufacturers did this? And didn't include 80 wire connectors all the time?
I thought 80 wire cables are for UDMA-66 and up, for example I have it this way on Abit BE6 - two UDMA-33 connectors for onboard IDE are with all pins (40-wire cable compatible), but two UDMA-66 connectors are 80 wire compatible. I've considered it logical this way.
https://theretroweb.com/motherboards/s/abit-ab-be6
Backstory: I had HDD prepared with cable after testing Slot 1 motherboard GA-6BXC board (80 wire IDE cables), and switched to QDI BrillianX 1s-2000 for another testing (which is also late 1999 board from same era) and to my suprise IDE cable didn't fit into connector. Then I've realized that board is using old 40 wire cables.
https://theretroweb.com/motherboards/s/qdi-p6 … illianx-1s-2000