Laptop schematic labelled LGS-1 with the number 11246, a 2.68 MB PDF. The name does not state a brand or model, and 11246 looks like a Wistron-style board number, though…

PDF schematic for the Gigabyte GA-8I945GMF-RH-E motherboard, a larger document of about 7.3 MB.

Gigabyte GA-H61M-DS2 motherboard schematic, revision 2.01, supplied in PDF format. The H61 in the name indicates the Intel H61 chipset, used with LGA1155 processors on…

Circuit diagram of the Gigabyte GA-P55A-UD3 motherboard, revision 1.0B, distributed as a PDF. This ATX board uses the Intel P55 chipset for LGA1156 CPUs.

Gigabyte GA-P55M-UD2 motherboard schematic in PDF format, revision 1.1B according to the name. The board is a micro-ATX design for Intel P55 and LGA1156 processors.

Schematic diagram for the Gigabyte GA-P55M-UD2, here the revision 1.0B document, supplied as a PDF of about 1.26 MB.

PDF schematic for the Gigabyte GA-G41MT-S2 motherboard, revision 1.5 according to the name, under 1 MB in size.