Sony VAIO BIOS archive listing two boards, MBX-204 and MBX-217, along with the code M851, which is likely a related board or platform identifier. The RAR is 864 KB.

Raw 2.00 MB BIOS binary for the Sony VAIO M851, compatible with the MBX-204 and MBX-217 motherboards according to the file name.

Sony VAIO schematic in PDF format, 847 KB, covering the MBX-217 motherboard, with M851 most likely the ODM project code carried alongside it.

Sony VAIO motherboard schematic for board MBX-217, with M851 as the design project code, supplied as an 847 KB PDF.

Archive for a Sony laptop listed as NW-M851 on the MBX-217 mainboard. Sony's MBX numbers identify its in-house board designations, while the real designer is usually an…

Circuit schematic for Sony board MBX-217, built under project M851, saved as an 847 KB PDF.

RAR archive for Sony model M851 on motherboard MBX-217, about 824 KB. No revision is stated in the name, so the revision printed on the board should be compared with the…

Another M851 schematic for Sony motherboard MBX-217, identical in size at 847 KB to the plain version, so it is likely the same document under a different name; the…

Archive for Sony motherboard MBX-217 tied to project M850, with the suffix 1-01 that likely marks a version or sheet release, around 824 KB.

RAR archive covering the Sony VAIO MBX-217 motherboard, tagged with the M851 project code.

Schematic for the Foxconn M851 design, which Sony uses as board MBX-217, revision R1.0, supplied as a 1.07 MB RAR archive.