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Soekris Engineering net5501

This compact, low-power, low-cost, advanced communication computer is based on an up to 500 Mhz 586 class processor. It has four 10/100 Mbit ethernet ports, up to 1 Gbyte DDR-SDRAM main memory and uses a CompactFlash module for program and data storage. It can be expanded using a MiniPCI type III board, a hard drive and one or two low-power standard PCI board.

It has been optimized for use as a Firewall, VPN Router, Internet Gateway and VoIP PBX, but has the flexibility to take on a whole range of different functions as a communication appliance. The board is designed for long life and low power.

It will be available in any volume in the standard version, and as board only or with a small metal box and various power supplies. The board can be customized according to requirements when ordering higher volume.

Please click on picture at the right for high resolution version.


  • 433 to 600 Mhz AMD Geode LX single chip processor with CS5536 companion chip
  • 128-1024 Mbyte DDR-SDRAM, soldered on board
  • 4 Mbit BIOS/BOOT Flash
  • CompactFLASH Type I/II socket, 8 Mbyte to 32 Gbyte FLASH or Microdrive
  • UltraDMA-100 interface with 44 pins connector for 2.5" Hard Drive
  • Serial ATA 1.0 interface for Hard Drive, with +5V and +12V power header
  • 1-4 VIA VT6105M 10/100 Mbit Auto MDIX Ethernet ports, RJ-45, protected with 2KW/100A TVS 
  • 2 Serial ports, DB9 and 10 pins internal header
  • USB 2.0 interface, one internal, one external port
  • Power LED, Disk LED, Error LED, Network LED's
  • Mini-PCI type III socket. (for t.ex. hardware encryption or wireless controller)
  • PCI Slot, right angle 3.3V signaling only, dual PCI slot option
  • 12 bit general purpose I/O, 20 pins header
  • Temperature and voltage monitor
  • Hardware watchdog
  • Board size 6.3" x 6.5"
  • Power using external power supply is 6-25V DC, max 20 Watt, protected with TVS
  • Option for 5V supply using internal connector
  • Operating temperature 0-60 °C

Cases available:

  • Standard case with 1 PCI slot, 6.7" x 11.4" x 1.3".
  • 1U 19" rackmount with with 2 PCI slots (available July 2007).


  • comBIOS for full headless operation over serial port
  • PXE boot rom for diskless booting
  • Designed for FreeBSD, NetBSD, OpenBSD and Linux
  • Runs most realtime operating systems


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