X470 Taichi M2_2 slot spec?
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=11038
Printed Date: 27 Jul 2025 at 8:00pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: X470 Taichi M2_2 slot spec?
Posted By: Ridly
Subject: X470 Taichi M2_2 slot spec?
Date Posted: 07 Mar 2019 at 2:06pm
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Hi, My Ultimate SU800 128GB no recognized in m2_2 slot. It only works fine in a M2_1. But M2_1 can work with a Samsung EVO 970. Can tell me why? |
Replies:
Posted By: ASRock_TSD
Date Posted: 07 Mar 2019 at 2:29pm
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Dear Ridly, Greetings, this is ASRock TSD. X470 Taichi supports two M.2 socket. - 1 x Ultra M.2 Socket (M2_1), supports SATA3 module and PCI Express module. - 1 x M.2 Socket (M2_2), supports PCI Express module. http://www.asrock.com/MB/AMD/X470%20Taichi/index.asp#Specification The ADATA Ultimate SU800 is a SATA module, but M2_2 slot only supports PCIe module. So please install it to M2_1 slot for use. Thanks! All the best, ASRock TSD |
Posted By: Xaltar
Date Posted: 07 Mar 2019 at 3:57pm
Simply put, you are trying to use a SATA mode M.2 in an NVMe only M.2 slot  The M.2 interface can be annoying like that, you have to read the specs of your board to know which M.2 slot to use with what interface drive. ------------- 
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Posted By: Ridly
Date Posted: 22 Mar 2019 at 11:12am
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Thank for the answer. Now my system is working well!! 
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Posted By: brkkab123
Date Posted: 23 Mar 2019 at 12:20am
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Put it this way from my experience with a X470 Taichi Ultimate mobo and a 1TB Samsung 850 EVO m.2 ssd. In m.2. slot 2 (bottom) = Unrecognized. in m.2 slot 1 (top) It works perfectly fine. Due to Samsung Magician's Rapid Mode, older drives can get well over 2000 mbps reads, so no real reason to need a newer model ssd to me. |
Posted By: brkkab123
Date Posted: 23 Mar 2019 at 12:26am
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P.S. On these mobo's if you use m.2 slot 1, you're video card still run's at x16 speed. That speed only lowers if you use 2 video cards. |
Posted By: gizmic
Date Posted: 23 Mar 2019 at 2:05pm
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you pretty much got it all wrong x470 taichi m.2 doesn't change speeds when using 2 video cards 850 evo will only work on the first slot because that slot supports nvme(pcie) & sata interface m.2 drives. 850 are sata interface you should only measure speeds with its raw performance not in any form of caching mode as you'll not always get those speeds all the time. 850 tops at 560MB/s sata limit. comparing with any pcie type its worlds apart already ------------- 
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