First post here and just got my GBA working the way I wanted. I had this same combination of 40 pin motherboard and white tab screen and massive issues with ghosting/image retention like what malheur has shown in their photos. I got it fixed though after studying the pinout that KipMudz posted...
I finally modeled and 3d printed the new HDD cages I need in order to build my 2nd NAS. Original ones don't fit the mounting holes on the hdds I'm using. Been sitting on this project for over 2 years smfh
Also another 70TB going in the front mount drive bays of this server. 182tb raw, going to probably use a zfs RAID-Z3 for 3 parity disks, so 140TB usable
I could claw back 14tb by only doing 2 parity disks but I feel like with 13 disks in the RAID I'd be kind of pushing my luck on rebuild time if I encounter a disk failure