Ports       Show Part Numbers       Hide Part Numbers 1009133, 1009177, 1009192, 1009194, 1009195, 1009205, 1009208, 1009212, 1009316, 1009359, 1009449, 1009552, 1013911R, 1013954, 1013969R, 1014024R, 1200393, 1200456, 1200457, 2900927, 2900931, 2905932R       Show Model(s)       Hide Models GT3224m, GT3222m, GT3236m, GM5266E, GM5260, DX420QS, GT5448E, GT5056j, GT5056b, GT5062j These are the ports on the rear of the computer. Refer to the following table for more information. Item Description A Side surround left and right / line in / retasking jack B Line out / retasking jack C Microphone in / retasking jack D Surround left and right / retasking jack E Center channel and LFE (subwoofer) / retasking jack F S/PDIF digital audio out G RJ-45 network (LAN) port H IEEE 1394 port I Six USB 2.0 ports J PS/2 mouse port K PS/2 keyboard port