DELL DIMENSION 4300 SOCKET 478 MOTHERBOARD 03E851 Dell Dimension 4300 socket 478 micro atx motherboard with tray. Intel 845, 2 Dimm Slots / PC133 SDRAM, 1x - 2X/4X AGP / 4 x PCI (2) USB Ports / 1 Serial / 1 Parallel, AGP Slot Onboard Audio Ports: Line In / Line Out / Microphone work for Dell #7H373, 7H374, 3E851, 07H373, 07H374