HP 653846-001 motherboard for TouchSmart 520 all-in-one desktop systems. FM1 socket supports AMD A-series APUs (Llano/Trinity generation). Integrated southbridge with SATA connectivity, USB 2.0/3.0 headers, and audio codec. 69M10AR3 revision board designed for compact AIO form factor with standard ATX power delivery. Compatible with HP TouchSmart 520 chassis and cooling solutions. Suitable for office productivity, light multimedia, and general computing in pre-built AIO configurations. Refurbished unit, tested and guaranteed; available via quote.