43c8358 Motherboard Manual Link
Intel-based (commonly paired with Intel 946GZ or similar series for that era).
CMOS clear and password reset jumpers are documented in the "Hardware Maintenance" section of the HMM. Guides & Manuals - Lenovo Support 43c8358 Motherboard Manual
The is a desktop motherboard (system board) manufactured for IBM/Lenovo ThinkCentre A55 and M55e systems. While a standalone manual specifically for the "43C8358" part number is rare, the official documentation is contained within the ThinkCentre Hardware Maintenance Manual (HMM) and the ThinkCentre User Guide . Official Documentation & Manuals Intel-based (commonly paired with Intel 946GZ or similar