This site contains Matsonic motherboard specifications and manuals for some of the most popular models. Please look through the below listings to find information on your motherboard.

Socket 478 (P4)
Model	Chipset	Form Factor
MS7057CT	i815EP B-Step	ATX
MS9047C+(533)	i845D	ATX
MS9037C	i845	ATX
MS9027C	i845D	ATX
MS9017C	i845	ATX
MS9077C	i845PE	ATX
MS9058E	i845GL	MATX
MS9087C	Intel 865PE	ATX
MS9097C	Intel 848P	ATX
MS9077C	Intel 845PE	ATX
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Socket A (AMD K7)
Model	Chipset	Form Factor
MSKM400A-M	KM400A+8237	mATX
MSKM400-M	KM266+8235	mATX
MSKM266PRO-M	KM266PRO+8235	mATX
MS7102C	KM266	ATX
MS8177C	KT600+8237	ATX
MS8188E	KM400+8235	mATX
MS8158E	KM266+8235	mATX
MS8158D	KM266+8235	mATX
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Super Socket 7
Model	Chipset	Form Factor
MS6261	ALi Aladdin 4	Baby AT

Other (VIA C3)
Model	Chipset	Form Factor
MSCLE266-F	VIA CLE266	Flex ATX
MS7188D	PLE133T	Micro ATX
MS7177CT	694T + 686B	ATX
MS7308ET	SiS 630ET	mATX