The manual sections for this board detail critical "Locating Components" maps:
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
This is the most comprehensive technical resource. It includes diagnostic tools, field-replaceable unit (FRU) lists, and instructions for replacing parts like the system board, fan assembly, and PCI adapters. View the ThinkCentre HMM (PDF) at Lenovo Support . 43c8358 Motherboard Manual
CMOS clear and password reset jumpers are documented in the "Hardware Maintenance" section of the HMM. Guides & Manuals - Lenovo Support
Standard 24-pin ATX power and 4-pin CPU power. The manual sections for this board detail critical
Intel-based (commonly paired with Intel 946GZ or similar series for that era).
2x USB 2.0 ports and PS/2 Keyboard/Mouse ports. Expansion: PCI and PCIe slots for adapters. Key Layout Information Guides & Manuals - Lenovo Support Standard 24-pin
Socket LGA775 (supports Intel Core 2 Duo, Pentium D, and Celeron D processors). Memory: Typically supports DDR2 SDRAM across 2 DIMM slots. Rear I/O Ports: