Karbon 300 Technical Resources

Manual and Documents

K300 Spec Sheet & Dimensional Drawings

K300 User Manual

K300 BIOS Manual

Pykarbon MCU Programming Guide

Frequently Asked Questions (FAQ)

How do I enable automotive/ignition timings?

The K300 contains a microcontroller which among other things, controls the timings. You can read more on the controller here: https://www.onlogic.com/support/onlogic-systems/rugged/karbon-series/karbon-series-using-the-serial-interface

What PoE standards does the optional PoE model support?

802.3at – up to 25.5 watts per port

How do I enable auto power on?

Press Esc to enter the BIOS and go to Chipset > Auto Power-On


Opening the K300 will not void your warranty, but you must take adequate ESD precautions to avoid damage caused by static electricity. A grounding strap is recommended.

  • Begin by removing the 4x Torx T10 screws from the case
  • Slide and flip the bottom cover off as shown.

Clear the CMOS

  • Unplug the unit from power and follow the disassembly steps above
  • Locate the clear button next to the battery and supercapacitor
  • Depress the button with a flathead screwdriver, fingernail, or similar object for 30 seconds
  • The CMOS is now clear. Power the unit back on. It may reboot multiple times before resuming normal operation.
  • If you continue to see issues, contact technical support.

Component Installation

  • Refer to the following motherboard schematic for component installation
  • Apply thermal pads from the accessory kit to any hardware installed
  • Hinge the bottom cover back on
  • Reinstall the case screws

Updated on June 30, 2020

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