Thomas-Krenn DC-SCM board expansion and BIOS/TKMI storage chip change

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This article is about the expansion of the DC-SCM board from Thomas-Krenn Barebone systems as well as replacing the flash chips for BIOS and TKMI or BMC located on it.

Compatible systems

The DC-SCM board and the chips on it can be removed from the following systems:

Intel platform AMD platform
1HE SR120-2
2HE SR220-2 SR220-2A

SR221-2A

Expansion of the DC-SCM board

In the following, you will find instructions for the demontage of the DC-SCM boards.

  • The DC-SCM card is located at the rear center of the barebone.
    The DC-SCM card is located at the rear center of the barebone.
  • After shutting down and disconnecting from the power supply, the cable of the front VGA connector should be disconnected from the board.
    After shutting down and disconnecting from the power supply, the cable of the front VGA connector should be disconnected from the board.
  • The right riser card should be removed. To do this, loosen the thumb screw at the back and press the locking mechanism shown in yellow in the picture. Then pull the riser card vertically out of the slot.
    The right riser card should be removed. To do this, loosen the thumb screw at the back and press the locking mechanism shown in yellow in the picture. Then pull the riser card vertically out of the slot.
  • The black screw in the middle of the DC-SCM card can now be solved more easily.
    The black screw in the middle of the DC-SCM card can now be solved more easily.
  • Finally, loosen the black screw at the rear.
    Finally, loosen the black screw at the rear.
  • The DC-SCM card can now be pulled out using the black tab at the back.
    The DC-SCM card can now be pulled out using the black tab at the back.

When reinstalling, repeat the steps in reverse order.

Expansion of BIOS/TKMI flashchip

Below you will find step-by-step instructions for removing the flash chip on the DC-SCM board.

  • The TKMI or BMC flash chip is located inside, while the BIOS chip is located outside on the DC-SCM board.
    The TKMI or BMC flash chip is located inside, while the BIOS chip is located outside on the DC-SCM board.
  • A thin, sturdy object, such as tweezers, is suitable for opening the base. First, carefully open the outer flap.
    A thin, sturdy object, such as tweezers, is suitable for opening the base. First, carefully open the outer flap.
  • The flashchips may have different sizes. 256 or 512 bit. Carefully remove the chips vertically. It is best to use tweezers, as the contacts can easily bend.
    The flashchips may have different sizes. 256 or 512 bit. Carefully remove the chips vertically. It is best to use tweezers, as the contacts can easily bend.
  • Manufacturers may also differ. The image shows a 256-bit chip from Winbond.
    Manufacturers may also differ. The image shows a 256-bit chip from Winbond.

Installation of chip

  • During installation, ensure that the position of the circle on the corner of the chip matches the triangle in the socket.
    During installation, ensure that the position of the circle on the corner of the chip matches the triangle in the socket.
  • The image shows a correctly inserted memory chip.
    The image shows a correctly inserted memory chip.

Author: Simon Wolf

Simon has been working as a hardware technician at Thomas-Krenn.AG since 2022. Mainly, he is responsible for repairing our customers and internal servers as well as all kinds of subjects revolving around hardware in general.


Translator: Alina Ranzinger

Alina has been working at Thomas-Krenn.AG since 2024. After her training as multilingual business assistant, she got her job as assistant of the Product Management and is responsible for the translation of texts and for the organisation of the department.


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