This Dell Optiplex 780 USFF desktop computer is a reliable machine for office work and casual computing. It features an Intel Core 2 Duo processor with a speed of 3.00 GHz and 4GB of RAM. The computer has a 160GB SATA hard drive and runs on Windows 10 operating system. With its ultra-small form factor, this Dell Optiplex 780 desktop computer is perfect for those who want a compact and space-saving computer. External USB 2.0 ports and 1 Internal USB 2.0; 1 Parallel; 1 Serial; 1 RJ-45; 1 VGA; 1 Display Port; 1 eSATA; 2 Line-in (stereo/microphone); 2 Line-out (headphone/speaker) USFF- 7 External USB 2.0 ports; 1 Serial; 1 RJ-45; 1 VGA; 1 Display Port; 1 eSATA; 2 Line-in (stereo/microphone); 2 Line-out (headphone/speaker) 9.4” x 2.6” x 9.3” / 7.0lb