43c8358 Motherboard Manual -

2x USB 2.0 ports and PS/2 Keyboard/Mouse ports. Expansion: PCI and PCIe slots for adapters. Key Layout Information

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 43c8358 Motherboard Manual

Front panel connectors (power, reset, HDD LED), internal USB headers, and SATA connectors. 2x USB 2

Standard 24-pin ATX power and 4-pin CPU power. internal USB headers