(1) Stereo Audio-Out Jack (3.5 mm for speakers or headphone)
(1) Mono Audio-In Jack (3.5mm for microphone)
(4) Hi-Speed USB 2.0 Ports (two Power Ports and two standard USB ports both are backward compatible with USB 1.1 devices and support transfers up to 480Mbps)
Simply plug in a USB cable and have your keyboard, monitor/LCD and other external devices connected to your notebook