HP Pro 3505 Microtower PC. Processor family: AMD, Processor model: AMD Quad-Core A6-3620 APU with Radeon HD 6530D Graphics (2.5 GHz, 4 MB L2 cache), Motherboard chipset: AMD A55. Maximum internal memory: 8 GB, Memory slots: 2x DIMM, Memory clock speed: 1600 MHz. Discrete graphics adapter model: AMD Integrated Discrete-Class Graphics Controller. Optical drive type: SATA SuperMulti DVD writer. Operating system provided: Windows 7 Professional 64