How to connect a motherboard, not.


tinmar49

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W11 pro beta
I swapped over two motherboards between tower cases, both W11. Just the motherboards and everything directly connected, processor and ram. The first powered up exactly as expected, but the second did not. I had connected the boards accordingly to the printing on the board surface because I have mislaid the manuals. I suspected the switching leads and it turned out that I had misread the logos and connected the power switch, power leds, hdd leds and reset switch to a USB header adjacent to the correct one. The pin count was identical, including the blank space. I was relieved when the pc booted normally after re positioning the connectors.
 

My Computers

System One System Two

  • OS
    W11 pro beta
    Computer type
    PC/Desktop
    CPU
    Athlon 3000G
    Motherboard
    Asrock A320M-HDV r4.0
    Memory
    16Gb Crucial DDR4 2400
    Graphics Card(s)
    onboard cpu
    Sound Card
    onboard
    Monitor(s) Displays
    AOC 27
    Screen Resolution
    2560-1440
    Hard Drives
    WD black SN750 M2 500Gb
    PSU
    400W Novatech semi modular 80+bronze.
    Case
    Fractal Design Define R2
    Cooling
    front 2 x 120mm rear 100mm stock psu
    Internet Speed
    215/21
    Browser
    Firefox and edge
    Antivirus
    Windows Security and free Malwarebytes
  • Operating System
    W11 pro 64
    Computer type
    PC/Desktop
    Manufacturer/Model
    homebuilt
    CPU
    Ryzen 3200G
    Motherboard
    MSI B450M PRO-VDH
    Memory
    2 x 8Gb Corsair Vengeance LPX 3000 DDR4
    Graphics card(s)
    onboard cpu
    Sound Card
    motherboard
    Monitor(s) Displays
    LG
    Screen Resolution
    1920 x 1080
    Hard Drives
    WD Black M2 SN750 500Gb
    PSU
    Be Quiet 400 semi modular 80+gold
    Case
    Coolermaster Silencio 650
    Cooling
    140mm front, 120 rear Akasa Vegas Chroma AM
    Internet Speed
    21/215
    Browser
    edge/Firefox
    Antivirus
    WD plus Malwarebytes free

Bree

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I have mislaid the manuals. I suspected the switching leads and it turned out that I had misread the logos and connected the power switch, power leds, hdd leds and reset switch to a USB header adjacent to the correct one. The pin count was identical, including the blank space. I was relieved when the pc booted normally after re positioning the connectors.
Two identical connectors wiith completely different functions, that's really bad design.
Lucky no apparent damage was done. Have you checked the USB still works?

Replacements for mislaid manuals can usually be found as pdfs downloaded from the manufacturer.
 

My Computers

System One System Two

  • OS
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Acer Aspire 3 A315-23
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
    Graphics Card(s)
    Radeon Graphics
    Monitor(s) Displays
    laptop screen
    Screen Resolution
    1366x768 native resolution, up to 2560x1440 with Radeon Virtual Super Resolution
    Hard Drives
    1TB HDD
    Browser
    Edge, Firefox
    Antivirus
    Defender
    Other Info
    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October.


    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell Lattitude E4310
    CPU
    i5 M 520
    Motherboard
    0T6M8G
    Memory
    4GB
    Screen Resolution
    1366x768
    Hard Drives
    500GB HDD
    Browser
    Firefox, Edge
    Antivirus
    Defender
    Other Info
    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround.


    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.

bobkn

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Two identical connectors wiith completely different functions, that's really bad design.
Lucky no apparent damage was done. Have you checked the USB still works?

Replacements for mislaid manuals can usually be found as pdfs downloaded from the manufacturer.
I think the pinouts are pretty much standard.

Pinouts for the B450M PRO-VDH:

USB header:

usb.jpg

Front panel header:

front_panel.jpg

They're not identical. They are mirror images mechanically. However, if the front panel connections are like most cases I've owned, the cabling isn't to a single plug, but to individual one or two pin connectors for the individual functions. Easy to connect to a USB header if the pin spacings are the same. A USB case connector couldn't be plugged into the front panel header.

I'm not sure what connections the OP made to the USB header, but I hope that no harm was done. If it had been me, it would have been a disaster.
 

My Computers

System One System Two

  • OS
    Windows 11 22000.708
    Computer type
    PC/Desktop
    Manufacturer/Model
    homebuilt
    CPU
    Intel I9-12900K
    Motherboard
    Asus Prime Z690-A
    Memory
    64GB Kingston DDR5-5600
    Graphics Card(s)
    Gigabyte RTX 3090 ti
    Sound Card
    none (USB to speakers), Realtek
    Monitor(s) Displays
    Viewsonic XG320U
    Screen Resolution
    3840 X 2160 @ 144Hz
    Hard Drives
    WB Black SN850 1TB M.2 NVME SSD
    Seagate Iron Wolf 8TB
    PSU
    eVGA SuperNOVA 1300 GT
    Case
    Corsair 5000D AIrflow
    Cooling
    Corsair iCUE H150i ELITE CAPELLIX Liquid CPU Cooler
    Internet Speed
    1200 Mbps
  • Operating System
    windows 11 22000.708
    Computer type
    PC/Desktop
    Manufacturer/Model
    homebuilt
    CPU
    Ryzen 9 5950X
    Motherboard
    Asus Tuf Gaming X570-Plus
    Memory
    64GB DDR4 3800 (@ 3600)
    Graphics card(s)
    Zotac RTX 3080
    Sound Card
    built in Realtek
    Monitor(s) Displays
    Asus PA329C
    Screen Resolution
    3840 X 2160
    Hard Drives
    Sabrent 1 TB PCI-E 4.0 X4 NVME M.2
    4 GB Seagate Ironwolf
    PSU
    eVGA SuperNOVA 850 G6
    Case
    Phanteks ENTHOO Pro M
    Cooling
    iCUE H115i RGB PRO XT Liquid CPU Cooler

wordsworth

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I recall on an older Asus motherboard having the System Panel connector bunched in with USB, etc. so I could see having confusion without a manual. The last two Asus boards I built with, Z170 Pro and Z590 A Gaming, both System Panel connectors are off by themselves in one corner of the board. Good design I think by Asus.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Wordsworth 10000
    CPU
    Core i7 10700K 3.8 GHz
    Motherboard
    Asus ROG Strix Z590-A Gaming Wifi
    Memory
    Corsair Vengeance LPX DDR4 32GB 3200MHz
    Graphics Card(s)
    Asus Radeon RX480 Strix 8GB
    Sound Card
    Asus Xonar DSX
    Monitor(s) Displays
    HP 2709m
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung 980 Pro M.2 SSD 500GB; Samsung 980 M.2 SSD 1TB
    PSU
    Thermaltake Toughpower Grand Platinum 850W
    Case
    Fractal Design Meshify 2
    Cooling
    CPU-Noctua NH D15 Chromax, GPU-Stock, Case-Noctua Chromax 3x140
    Keyboard
    Microsoft Natural Ergo 4000
    Mouse
    HP X500
    Internet Speed
    Cable
    Browser
    Vivaldi, MS Edge
    Antivirus
    Malwarebytes 4.4.3, Windows Defender
    Other Info
    Klipsch Promedia 5.1 THX
    Asus External Blu-Ray 16D1X-USB 3.0
  • Operating System
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Wordsworth 6000
    CPU
    Core i7 6700K 4.0 GHz
    Motherboard
    Asus Z170 Pro
    Memory
    Corsair Vengeance LPX DDR4 32GB 3000MHz
    Graphics card(s)
    Asus GeForce GTX 1050 Ti
    Sound Card
    Asus Xonar SE
    Monitor(s) Displays
    HP X24ih
    Screen Resolution
    1920x1080
    Hard Drives
    Intel 760p M.2 SSD 500GB; Intel 540 SSD 480GB; Intel 335 SSD 240GB
    PSU
    Thermaltake Toughpower GF1 750W
    Case
    Lian Li PC-B70
    Cooling
    CPU- Noctua NH-D15; GPU-Stock; Case-Noctua Chromax 2x140, 2x120
    Mouse
    Microsoft Wireless Comfort 5050
    Keyboard
    Microsoft Wireless Comfort 5050
    Internet Speed
    Cable
    Browser
    Vivaldi, MS Edge
    Antivirus
    Malwarebytes 4.4.3, Windows Defender
    Other Info
    HP bd 340
    HP bd 240
    Denon DRA-800H
    Klipsch RP-600M
    Klipsch R-100SW (2)

tinmar49

Active member
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6:50 PM
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278
Location
UK
OS
W11 pro beta
You are right, they must be mirror images. I have not tried the USB header as all the USB cabling for that case had already been accounted for. It is unlikely that any damage had been done although I had connected 6 and 8, USB+ to ground.
The object of the exercise was to put the higher spec innards in the higher spec case.
 

My Computers

System One System Two

  • OS
    W11 pro beta
    Computer type
    PC/Desktop
    CPU
    Athlon 3000G
    Motherboard
    Asrock A320M-HDV r4.0
    Memory
    16Gb Crucial DDR4 2400
    Graphics Card(s)
    onboard cpu
    Sound Card
    onboard
    Monitor(s) Displays
    AOC 27
    Screen Resolution
    2560-1440
    Hard Drives
    WD black SN750 M2 500Gb
    PSU
    400W Novatech semi modular 80+bronze.
    Case
    Fractal Design Define R2
    Cooling
    front 2 x 120mm rear 100mm stock psu
    Internet Speed
    215/21
    Browser
    Firefox and edge
    Antivirus
    Windows Security and free Malwarebytes
  • Operating System
    W11 pro 64
    Computer type
    PC/Desktop
    Manufacturer/Model
    homebuilt
    CPU
    Ryzen 3200G
    Motherboard
    MSI B450M PRO-VDH
    Memory
    2 x 8Gb Corsair Vengeance LPX 3000 DDR4
    Graphics card(s)
    onboard cpu
    Sound Card
    motherboard
    Monitor(s) Displays
    LG
    Screen Resolution
    1920 x 1080
    Hard Drives
    WD Black M2 SN750 500Gb
    PSU
    Be Quiet 400 semi modular 80+gold
    Case
    Coolermaster Silencio 650
    Cooling
    140mm front, 120 rear Akasa Vegas Chroma AM
    Internet Speed
    21/215
    Browser
    edge/Firefox
    Antivirus
    WD plus Malwarebytes free
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