2x USB 2.0 ports and PS/2 Keyboard/Mouse ports. Expansion: PCI and PCIe slots for adapters. Key Layout Information
Intel-based (commonly paired with Intel 946GZ or similar series for that era).
Line In (blue), Line Out (lime), and Microphone (pink) jacks.
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 .