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133 Mhz 486 based communication mainboard

Soekris Engineering net4501

This compact, low-power, low-cost, advanced communication computer is based on a 133 Mhz 486 class processor. It has three 10/100 Mbit ethernet ports, up to 64 Mbyte SDRAM main memory and uses a CompactFlash module for program and data storage. It can be expanded using a MiniPCI type III board and a low-power standard PCI board.

It has been optimized for use as a Firewall and VPN Router, 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.

Hardware and Software


   * 100/133 Mhz AMD ElanSC520
   * 16-64 Mbyte SDRAM, soldered on board
   * 1 Mbit BIOS/BOOT Flash
   * CompactFLASH Type I/II socket, 8 Mbyte FLASH to 4 Gbyte Microdrive
   * 1-3 10/100 Mbit Ethernet ports, RJ-45
   * 1 Serial port, DB9. (optional 2nd serial port)
   * Power LED, Activity LED, Error LED
   * Mini-PCI type III socket. (t.ex for optional hardware encryption.)
   * PCI Slot, right angle 3.3V only. (t.ex for optional WAN board.)
   * 8 bit general purpose I/O, 14 pins header
   * Hardware watchdog
   * Board size 4.85" x 5.7"
   * Power using external power supply is 6-20V DC, max 10 Watt
   * Option for 5V supply using internal connector
   * Operating temperature 0-60 °C


   * 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

Replacement Internal Battery:

   * Panasonic ML621S/F9DE - available from DigiKey and others.

External links

Articles in category "Net4501"

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