DC-in 1x Power on switch 1x Headphones 1x Microphones 1x USB 2.0 total 4x VGA 1x DVI 1x, DVI-D single link, maximal resolution 1920 x 1200 pixel (WUXGA) Serial (RS-232) 1x Mouse / Keyboard (PS/2) 1x Ethernet (RJ-45) 1x Parallel 1x Kensington Lock support 2x eSATA 1x CELSIUS H265 CELSIUS H270 ESPRIMO Mobile D9510 ESPRIMO Mobile M9410 ESPRIMO Mobile M9415 ESPRIMO Mobile U9210 ESPRIMO Mobile U9215 ESPRIMO Mobile X9510 ESPRIMO Mobile X9515 ESPRIMO Mobile X9525