Dell Latitude D531 Series AMD Socket S1 Laptop Motherboard KX345 0KX345 CN-0KX345.Dell Part Number: KX345 0KX345 CN-0KX345Compatible Part Numbers: DA0JX6MB8E0 31JX6MB0030Compatible Models: Dell Latitude D531 Notebook SeriesSpecifications:4 x USB Ports2 x Audio PortsFireWire PortVGA PortTV-Out PortRJ-45 (LAN)RJ-11 (Modem)Serial PortCard ReaderAC Port