4 USB 3.0 ports (Always-On); 2 USB 2.0 ports (1 Always-On, 1 powered); 1 eSATA adapter; 1 Line-in jack; 1 Audio-out (headphone) jack; 2 DisplayPort; 1 VGA; 2 DVI-D; AC adapter connector with light; 1 Mouse connector; 1 Keyboard connector; 1 Parallel port; 1 Serial port; 1 Monitor stand port; 1 RJ-45 (network) jack