
Data Sheet 
 Mainboard D1520 
 Issue May 2003 
Published by 
Fujitsu Siemens Computers 
http://www.fujitsu-siemens.com/mainboards
All rights, including rights created by patent grant or registration of a 
utility model or design as well as rights of technical modifications are 
reserved. Delivery subject to availability. Designations may be 
trademarks, the use of which by third parties for their own purposes 
may violate the rights of the trademark owners. 
Copyright 
 Fujitsu Siemens Computers, 02/2003 
Company stamp
Features 
Chipset 
Board Size 
VGA 
Audio / 6 channel / S/PDIF 5.1 
Buzzer / int. Speaker Support 
LAN / with Alert-on-LAN 
RAID 
FireWire  
HI-SPEED USB 2.0 
SmartCard SystemLock(USB / Serial) 
Silent Fan 
Fujitsu Siemens Computers 
Keyboard Power Button Support 
Internal Connectors 
DIMM Sockets (DDR333 SDRAM, PC2700) 
AGP Slot (2/4x, 32Bit, 66 MHz, 1.5 V) 
PCI Slots (32Bit, 33 MHz, 5 V and 3.3 V) 
CNR Slot (Type A, AC'97 only) 
S-ATA (150 Mbyte/s)
ATA(Ultra DMA/100) 
Floppy Interface (up to 2.88 MB) 
S/PDIF (5.1 digital Audio) OUT / IN 
CD / AUX Audio Input 
Frontpanel Audio (headphone, microphone) 
Wake-on-LAN 
IEEE 1394* (FireWire/ i.Link
) 
USB* (2.0, ~480 MB/s) 
Serial* (FIFO, 16550 compatible) 
FAN PSU**/CPU/AUX1/AUX2 
SMBus* (Case Temperature) 
Intrusion* (Case Open) 
Power ATX/ATX 12V/AGP Pro 
External Connectors 
VGA 
Audio Mic. In / Line in / Line out (2 x 0.5 W / 8 
) 
or Surround / Center, LF / Front 
S/PDIF (5.1digital Audio) OUT / IN 
Game/MIDI 
LAN (RJ-45) 
PS/2 Mouse / Keyboard 
USB Ports (2.0, ~480MB/s) 
Serial Ports (FIFO, 16550 compatible) 
Parallel Port (EPP/ECP) 
* for use with internal devices or optional Front- or Rearpanel 
** not supported by standard Power Supplies 
D1520-A 
Intel 845GE 
μATX 
9
9
 / 
9
 / 
9 
9
 / - 
9
 / - 
- 
- 
-
- / - 
- 
- 
2 
1 
3 
1 
- 
2 
1 
1 / - 
1 / - 
1 
- 
- 
4 
- 
- / 1 / 1 / - 
- 
- 
1 / 1 / - 
1 
1 / 1 / 1 
- / - 
- 
1 
1 / 1 
2 
1 
1 
Board Size
Chipset 
Memory 
2 DIMM Sockets (2.5 V), 32 MB - 2 GB, 184 Pin, 
DDR333/266 SDRAM (PC2700/2100), unbuffered, no ECC 
(For details on recommended RAM, please refer to our website) 
Processors 
Intel
 Pentium
 4 Processors, mPGA 478, 533/400 MHz FSB 
Intel
 Celeron
 Processors, mPGA 478, 400 MHz FSB 
(For details on processors supported, please refer to our website) 
Power Specification 
ATX 12 V Power Supply required 
Support for Soft-Off Power Supplies 
5 V and 3.3 V Supply Voltage on PCI Slots 
3.3 V Auxiliary Supply Voltage on PCI Slots (Wake-Up Function)
On board CPU Voltage Regulator, 5 V / 2 A Auxiliary Power 
required for USB Wake-Up from Save-to-RAM, Save-to-Disk 
Power Supply Requirements  
for onboard components (worst case) 
Source 
Voltage 
+ 12 V 
Main Power  
- 12 V 
Supply 
+ 5 V 
+ 3.3 V 
Aux. Power Supply + 5 V 
BIOS 
Phoenix NuBIOS V4.06 modified and adapted by  
Fujitsu Siemens Computers 
SM-BIOS (DMI), BIOS Update via disk, Quick Boot, Logo Boot 
Quiet Boot (Silent Screen), Plug & Play, Automatic DRAM and 
PCI Configuration, Advanced Power Management 
ACPI S4 (Save-to-Disk), ACPI S3 (Save-to-RAM) 
Security Features 
Recovery BIOS, System and BIOS Password, Boot and/or Write
Protection for Floppy Disk Drive, Boot Sequence Control for each
Floppy and IDE Drive, Serial and Parallel Port Access Protection,
Boot Sector Virus Warning, Write Protection for Flash BIOS 
Special Features 
Silent Drives 
Noise reduction for optical and hard disk drives
Recovery BIOS Restores a corrupted BIOS 
Desk Update 
Simple driver update with DU CD 
Multi Boot 
Comfortable boot from any boot device USB 
Security 
Access protection with Fujitsu Siemens 
Computers Memory Bird 
External Connectors 
PS/2 Mouse           Parallel                                 LAN    Audio 
μATX: 9.6” x 9.6” (243.8 x 243.8 mm) 
Intel
 845GE 
Maximal 
variation 
± 5 % 
± 10 % 
± 5 % 
± 5 % 
± 5 % 
Mainboard  
current 
(Maximal) 
8 A 
0.05 A 
0.9 A 
3.4 A 
2 A 
Graphics 
Integrated Intel
 Extreme Graphics, 2D/3D Graphics Controller,
256 Bit, 120 Hz max. Refresh Rate, 2047x1536x16 max. Resolution,
350 MHz RAMDAC, Dynamic Video Memory Technology, 
upgradeable with AGP Graphics Card or ADD Cards to add support 
for digital displays or TV Out, DDC 2B Support for Monitor Detection
Audio
Analog Devices AD1980, AC ‘97 Audio, 6-channel Surround 
Sound, HW 3D Stereo Enhancement, SW Soundblaster 
Emulation (Win98/WinME/ Win2000) Support, SW Wavetable 
Synthesis Support, S/PDIF 5.1 
LAN
Intel
 LAN Ethernet Controller 82562 ET with 10/100 Mbit/s, 
Wake-on-LAN (WoL) by interesting Packets, Link Status Change 
and Magic Packet 
IDE
2 ATA 100 Interfaces, up to 4 IDE Drives, 
Versions 
      PS/2      Serial              VGA                         USB 
  Keyboard                                                          A&B