How to find the exact motherboard:
Generally speaking, pay more attention to the Memory/Ram slot and you will find the part number.
1.For Toshiba:V000XXXXXX or K0000XXXXXXX or A0000XXXXXXX or H0000XXXXXXX
2.For HP:XXXXXX-001 or XXXXXX-501 or XXXXXX-601
3.For Acer:MBXXXXX00X
4.For Dell:DP/N 0XXXXX
5.For Sony:AXXXXXXX.
6.For Lenovo:9000XXXX or FRU