HP 738686-001 UMA heatsink is a replacement cooling part for computer models with Intel UMA graphics. It is listed as the heat sink for this graphics configuration and serves the processor as part of the computer’s cooling assembly.
The service guide distinguishes it from the separate heat sink for discrete-graphics models, so the UMA version is identified by its intended graphics configuration. In the service procedure, the heat sink attaches to the system board with four captive screws. Thermal material sits between the assembly and system board components, and thermal pads serve the processor and heat-sink section.