HP Compaq Pro 6305 SFF, A4-6300B processor, 4GB memory, 500GB hard drive, AMD Radeon HD 8370D graphics, DVD+-RW, Win8.1 Pro downgrade to Win7 64, OPK, Cyberlink, HP Client security suite, 10GB of BOX cloud storage, embedded TPM, SRS Premium Sound, 2 PS/2 port, one Serial Port, one parallel port, Dual Display support standard (1 VGA and 1 Displayport 1.2) , DASH 1.1, 3-3-3 waranty