From the 2021 revision of the maintenance guide, the CLR_CMOS jumper is located near the SATA ports.
One of the critical updates documented in late 2021 for the Ver 10 board involves BIOS corruption recovery. If your system powers on but shows a black screen: ms7869 ver 10 motherboard manual 2021
Because Acer used this board in the Aspire TC-605: From the 2021 revision of the maintenance guide,