HP Smart Buy ProDesk 600 G1. Core i5-4590T Quad Core 2.0 GHz. 4 GB (1x4 GB) DDR3 1600 MHz. 500GB SATA 6G 2.5 8G SSHD. Chipset Intel Q85. USB Mouse/Keyboard. Intel I217LM GbE Integrated NIC. Intel 802.11 a/b/g/n 7260 Wlan Wireless NIC. Intel HD 4600 Graphics. Windows 7 Professional 64 with Windows 8.1 Pro License. HP Client Security, Microsoft Security Essentials. Cyberlink, DTS Sound +.