MSI MS-7869 Ver 1.0 is an OEM motherboard primarily found in Acer Aspire desktop models such as the TC-605, TC-705, and XC-605
Once you have the model name:
In the corner of a dusty workshop in 2021, Elias found it: the MS-7869, Version 1.0. It was a "SharkBay" motherboard, a piece of 2013 history pulled from a discarded Acer TC-605. To the world, it was e-waste; to Elias, it was a puzzle. He spent hours on the Acer Community forums ms7869 ver 10 motherboard manual 2021