Intel Motherboards - Why Onboard LAN MAC Address can change automatic?

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Why Onboard LAN MAC Address can change automatic?

Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=5856
Printed Date: 27 Jul 2025 at 6:00pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Why Onboard LAN MAC Address can change automatic?

Posted By: d3kilo
Subject: Why Onboard LAN MAC Address can change automatic?
Date Posted: 16 Aug 2017 at 4:58am

" rel="nofollow - When having problem with diskless system and so difficult to make boot from onboard LAN on Asrock H110-DVS i tried disable CSM on BIOS. And after save and quit the motherboard have 3 short beeps no display, I power off and disconnect the Power cord and battery. After Power On i realize the MAC Address change automatic from 70:85:XX:XX:XX:XX Become D0:50:XX:XX:XX:XX. How can the MAC address change by it self? Can i use it without a problem?

Replies:

Posted By: d3kilo
Date Posted: 17 Aug 2017 at 12:32pm

I think i got defects motherboard H110M-DVS. 2 motherboards have same MAC D0:50:99:72:EB:0C so i cant use them using DHCP for diskless or internet.

Posted By: ASRock_TSD
Date Posted: 18 Aug 2017 at 4:49pm

Dear D3kilo,

Thank you for choosing ASRock.

Regarding your case, please check your MAC address is the same with the motherboard MAC sticker?

If not, please follow the below link to write the correct MAC address to your motherboard.

http://www.asrock.com/support/faq.asp%3cid=415" rel="nofollow - http://www.asrock.com/support/faq.asp?id=415

Thank you!

Yours truly,

ASRock TSD