Intel Motherboards - z490 Extreme 4 not accepting M.2 in first slot

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z490 Extreme 4 not accepting M.2 in first slot

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=17263
Printed Date: 01 Aug 2025 at 6:05am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: z490 Extreme 4 not accepting M.2 in first slot

Posted By: Divinehammer
Subject: z490 Extreme 4 not accepting M.2 in first slot
Date Posted: 16 Nov 2020 at 11:50pm

So over the weekend I was installing this Mobo. I also got a Samsung 970 evo plus M.2. According to the manual it appears that I should be able to install this in the M2_1 slot and boot. However putting it in that slot it did not appear to windows as a valid drive to install OS to. I put it in the M2_2 slot and it worked fine. However I dont like this because uusing M2_2 and M2_3 takes away SATA plugs. Should this have worked in the M2_1 slot? Can I now simply move the M2 drive to M2_1 with no other issues? Will it make a difference I see that this slot seems to be faster as it is Gen 4 not Gen 3. Thanks.

Replies:

Posted By: ASRock_TSD
Date Posted: 17 Nov 2020 at 6:00pm

Dear Divinehammer,

Thanks for posting!

Regarding your question, the M.2_1 slot is reserved for the future processor.
When using the Comet Lake CPU, please install the M.2 to the second and third M.2 slots.

With thanks,
ASRock TSD