A:1. Please open the chassis and you can find a white sticker at the edge of board with 12-digit MAC ID.
2. Download the MAC tool form following link:
https://www.asrock.com/support/download/mactool.asp
3. Extract (Unzip) the file as "MAC161B”folder then put entire folder into a bootable USB flash drive root directory.
4. Boot up system than press [F11]to enter the Boot Menu, select your USB Flash, afterwards.
5. Under DOS environment, please key in the command as follow:
Cd MAC161B
MAC CXXXXXXXXXXXX
(XXXXXXXXXXXXis MAC Address;please refer to the step1 to check the MAC Sticker)
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6. After Key in the instruction, the system will flash MAC address automatically.
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7. When "Done" showing, the MAC address already been flash successfully.
You can reboot the system into OS.