I recently aquired an Asus PVI-486SP3 Rev 1.8 motherboard and when testing it, VLB graphic cards (or perhaps all VLB cards) are not working (tried 3 different VLB graphic cards). The motherboard BIOS looks like it's 0304.

All 3 of the VLB graphic cards used for testing work fine in other systems. PCI and ISA graphic cards and cards in general all seem to work fine. I prefer VLB graphic cards in 486 systems though.

Is there a jumper that I've missed or a setting in the BIOS that I've maybe overlooked? I'm guessing the light brown VLB slot itself is possibly dead because ISA cards placed in the ISA slot right in front of the light brown VLB slot work fine. I figured I'd ask though before I just simply retire the motherboard by storing it for safe keeping.

Thanks in advance for any help.