Form Factor  D845BG:  ATX (12.00 inches by 8.20 inches)
D845PT:  microATX (9.60 inches by 8.20 inches)
Processor  •  Support for an Intel
® Pentium® 4 processor in a µPGA478 socket
•  400 MHz system bus
Memory   •  Two 184-pin DDR SDRAM Dual Inline Memory Module (DIMM) sockets 
•  Support for single-sided or double-sided DIMMs (DDR 200 and DDR 266)
•  Support for up to 2 GB system memory
NOTE: The D845BG/D845PT boards have been designed to support DIMMs based
on 512 Mbit technology for a maximum onboard capacity of up to 2 GB, but
this technology has not been validated on this board.  Please refer to the
following Intel web sites.  For the D845BG board:  
http://developer.intel.com/design/motherbd/bg/bg_mem.htm
For the D845PT board:
http://developer.intel.com/design/motherbd/pt/pt_mem.htm
Chipset  Intel
® 845 Chipset, consisting of:
•  Intel
® 82845 Memory Controller Hub (MCH)
•  Intel
® 82801BA I/O Controller Hub (ICH2)
•  Intel
® 82802AB 4 Mbit Firmware Hub (FWH)
Audio  Audio subsystem for AC ‘97 processing using the Analog Devices AD1885 codec
Video  AGP connector supporting 1.5 V 4X AGP cards
I/O Control  SMSC LPC47M142 LPC Bus I/O controller
Peripheral
Interfaces
•  Up to seven USB ports 
•  Two serial ports
•  One parallel port
•  Two IDE interfaces with UDMA 33, ATA-66/100 support
•  One diskette drive interface
•  PS/2† keyboard and mouse ports
•  Three fan connectors
Expansion
Capabilities
•  D845BG:  Six PCI bus add-in card connectors (SMBus routed to PCI bus
connector 1)
•  D845PT:  Three PCI bus add-in card connectors (SMBus routed to PCI bus
connector 1)
Hardware Monitor
Subsystem
•  Voltage sense to detect out of range power supply voltages
•  Thermal sense to detect out of range thermal values 
•  Two fan sense inputs used to monitor fan activity