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Weird Front Panel USB phenomen on MSI Z490 Unify.

Jan 2, 2020
291 (0.88/day)
System Name Kiste
Processor Intel Core i9 10850k 5.1 Ghz/4.8 Ghz 1.4V
Motherboard MSI MEG Z490 Unify
Cooling NZXT Kraken X73 (Now an NH D15 Chromax. Black)
Memory G.Skill Trident Z Neo 3600 Mhz CL16 (2x16GB)
Video Card(s) MSI RTX 3090 Gaming X Trio, and a big collection with all Ampere, almost all Pascal and Turing Cards
Storage Samsung 980 Pro 500GB, 2x Samsung 870 QVO 4TB, Crucial MX500 2TB (Backup)
Display(s) LG 27GL850-B QHD 144Hz
Case NZXT H710 Black
Audio Device(s) Bose Companion Series 2 III, Sennheiser GSP600
Power Supply bequiet! Dark Power Pro 750W Platinum
Mouse Logitech G903 Lightspeed Hero, G502 Hero Special Edition, Zowie EC-2A
Keyboard Logitech G915, Corsair K95 RGB Platinum
so i bought a Unify for my 10850k.
it overclocks awesome, runs stable but the front panel USB is weird.

it is correctly plugged in and functional.
but there is one weird problem.

i have a NZXT H710 and two USB Ports

both ports are functional but from my devices only a few work on each port.

for example:
my external SSD works on both
my USB Adapter for my XBox One Controller only in the first one
my iPad only in the second one
my Cloud II Headset only in the first one
my USB "Charger" Cable for my g903 hero wireless only in the second one.

and my Galaxy S20 works in Both.

unplugged it twice, reinstalled windows (did that anyways after swapping my board).

it is completely random which device will run on which port. but it never changes. i can plug my xbox controller adapter 200 times in a row in each port and it works 200 times in the first one but not the second and vice versa for other devices.

any ideas?
Jul 25, 2006
7,680 (1.47/day)
Nebraska, USA
System Name Brightworks Systems BWS-6 E-IV
Processor Intel Core i5-6600 @ 3.9GHz
Motherboard Gigabyte GA-Z170-HD3 Rev 1.0
Cooling Quality case, 2 x Fractal Design 140mm fans, stock CPU HSF
Memory 16GB (2 x 8GB) DDR4 3000 Corsair Vengeance
Video Card(s) EVGA GEForce GTX 1050Ti 4Gb GDDR5
Storage Samsung 850 Pro 256GB SSD, Samsung 860 Evo 500GB SSD
Display(s) Samsung S24E650BW LED x 2
Case Fractal Design Define R4
Power Supply EVGA Supernova 550W G2 Gold
Mouse Microsoft Wireless 5000
Keyboard Microsoft Wireless Comfort 5050
Software W10 Pro 64-bit
Well, according to your manual, that MSI Unify board supports a wide range of USB devices.

And according the case's webpage, it has on the front panel,

1x USB 3.1 Gen 2 Type-C​
2x USB 3.1 Gen 1 Type-A​
And your case's manual is one of the worst I have ever seen :( - well the download version anyway - very hard for 68 year old eyes to see. But it is showing the 3 USB ports too (1 Type-C and 2 Type-A). I am wondering if your problem has anything to do with power through those ports. I note in your manual it also says,
In order to recharge your iPad,iPhone and iPod through USB ports, please install MSI® DRAGON CENTER utility
Jun 23, 2014
589 (0.25/day)
Processor 3900X 4.4
Motherboard X570 Tomahawk
Cooling 2x EK Phoenix 240 tubed together with Vardar push-pull
Memory 2x8gb Trident-Z 3600
Video Card(s) Duke 2080
Storage Optane 280gb PCI-E + 980 Pro 500gb
Display(s) PG348Q
Case Core P3
Audio Device(s) ATOLL DAC 100SE, Magnat RV-1 to Dali Ikon 1 MK2, QED banana cabling
Power Supply AX1500i
Mouse Projects Gaming S001
Keyboard Topre Realforce 87U with all 30g keys
Software Win 10 Pro
It probably has to do with the amperage the ports can deliver at a time. If you exceed it or if the board over all causes instability from the overclocks, the USB devices will fail. Check BIOS options regarding how much current the ports deliver, and see if you get Windows errors regarding USB device failure.
Nov 20, 2013
4,574 (1.78/day)
Kiev, Ukraine
System Name WS#1337
Processor Ryzen 5 1600X
Motherboard Gigabyte x470 AORUS Ultra Gamin
Cooling Xigmatek Scylla 240 AIO
Memory 2x8GB Team T-Force Vulkan DDR4-3000
Video Card(s) MSI RTX 2060 Super Armor OC
Storage Adata SX8200 Pro 1TB
Display(s) Samsung U24E590D (4K/UHD)
Case Chieftec AL-01B-OP
Audio Device(s) ALC1220
Power Supply SeaSonic SSR-550FX (80+ GOLD)
Mouse Logitech G603
Keyboard Zalman K500 modded (Gateron brown)
Software Windows 10, Ubuntu 20.04 LTS
Sometimes it's as simple as bad contact on FP_USB3 header. Just reseat it and make sure that pins aren't bent. I had several cases, where one of the ports would only accept USB3 devices and ignore USB2 (or opposite), or some where ports would intermittently refuse to work (either one or both). In most instances it was either a loose header or a bad front panel cable.


New Member
Mar 7, 2020
7 (0.03/day)
Use bluetooth for xbox controller it is so much better than wireless adapter. Once I got z490 unify I threw that wireless adapter in the trash.

For your issue: I would make sure you got latest chipset driver installed and check device manager for any errors.