Genuine Dell Motherboard for the Optiplex GX270 SMT System Part Numbers: DG284, U1325, H1487, K5786, H1290, Y1057, FG015, FG022, YF927 Intel 865PE ChipSet, Socket mPGA478 Pentium 4 and Celeron Processors Four 184-pin DIMM sockets for DDR 1 400/333/266, 1 GB MAX system memory Integrated 64MB Video, Integrated AC 97 Sound, 4 PCI Card Slot 6+2 USB 2.0 Ports, Audio Ports for line-in, line-out, and microphone 1 Serial/1 Parallel Port, PS2 Mouse and Keyboard Ports