This is a PCI 1394A Integrated Host Controller made by VIA Technologies.
The middle of the blue region on the right is NOT a stitching error, it actually does look like that, I had to double check!
The VIA logo is visible (upside down) on the bottom right and there is some illegible markings on the bottom left.
This is a composite of 35 images taken by a pixel 2XL from a microscope at 40X. The images had 65% overlap and were stitched together in Autopano Giga.
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