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m748lmrt PCI graphics card issues

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Reply 20 of 23, by bLUETHUNDER83

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Herman BRULE wrote on 2025-11-11, 23:14:

Hi, any one have VGA pinout of this motherboard?

The ebay links further up is what I ordered for this motherboard

Reply 21 of 23, by racecarfiftysix

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Hello! I've lurked this forum for a long time, at least since 2011. I recently got one of these M748LMRT boards, and so it looks like I've found a calling to post here!

After quite a repair job, I have my board fully working, and I took the time to use a multimeter and probe out all the pinouts that I could. I have posted them on my personal website here: https://sonitech.org/2026/09/01/m748lmrt/#pins

I hope this helps someone out there! Good luck!

Reply 22 of 23, by Errius

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Hello, welcome to the forum.

I have two PCChips boards that I really like and have never had problems with them, but your experience is a good reminder why this company is so unpopular with many people!

"This all reminds me when i took the windows vista sticker thingy off my old laptop, and on my washing machine as a joke. A few days later said washing machine stopped working. I still think this cannot be a coincidence."

Reply 23 of 23, by racecarfiftysix

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Errius wrote on 2026-09-07, 21:18:

Hello, welcome to the forum.

I have two PCChips boards that I really like and have never had problems with them, but your experience is a good reminder why this company is so unpopular with many people!

Hi, thank you! 😀 And yeah, that's for darn sure! The board I have seems happy enough after that repair, but I feel that in terms of the actual electronics design & PCB quality - as my article says - it's kinda held together with hopes and dreams, so to say I'm not a little nervous about it still would be inaccurate. So, I'm gonna be stability testing it a whole lot. Hopefully it'll behave from here on out!

And for the record, I went ahead and tested out the original subject of this forum post. I can confirm that this board selects PCI as the default BIOS option for video output, and that it will indeed output video there, at least on my Compaq 296684-001 PCI video card with an S3 ViRGE/GX 86C385 chipset. I went and updated my website article with this information, and here's a photo to show. Works in BIOS as well as Win98SE no problemo!

PXL_20260912_163625693_new-scaled.jpg