922 front usb 2 not connected как исправить - Исправление ошибок и поиск оптимальных решений проблем

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####
► Issue — POST Error
Messages:

xxx-Front Audio Not Connected
xxx-Front USB Not Connected
xxx-Front USB 2 Not Connected
xxx-Front USB 3.0 Not Connected
xxx-Front 1394 Not Connected
Press F1 to Boot.
Where xxx represents a three digits code.

► This error may occur during POST for three main reasons:
1. The Feature Byte is not accordingly set. This may happen after a motherboard
replacement
2. The front cable is disconnected and/or defective and/or the front assembly
is defective.
3. The front assembly is a type without the «assembly presence
detect» or «assembly sense» feature.

► Technical background
Re. 2 & 3:
Some computer manufactures are using one pin on the front audio, USB and
FireWire 1394 header as a sense pin to detect the presence of the respective
front assembly.
When the sense pin is:
— Connected to the ground = the front assembly is logically and/or physically
present = no error.
— Not connected to the ground = the front assembly is not logically present =
the error above.

► RESOLUTION
Re. 1. Set correctly the Feature Byte along with Asset Tag, Chassis number,
Product Name, Sku Number, Build ID.
This is usually done on HP computers by entering BIOS Setup and once inside the BIOS press Ctrl+A. Then the above values are filled in under usually Security —
System IDs.

Re. 2 & 3
Try other assembly. Or unplug the front assembly and measure with ohmmeter that
the front assembly’s sense pin is interconnected to the ground pin.

If the front assembly is a type without the sense feature then you need to
interconnect the sense pin to the ground.

If the front assembly is not present then follow instructions below to resolve
the error.
A. Update BIOS on the system.
Some newer BIOS’ are addressing this issue.

B. Disable the front audio, USB and FireWire 1394 device in BIOS.
This can be done under BIOS section devices (device is set to disabled) or
security (device is set to hidden).
This may resolve the issue on some systems. However it is not possible to
disable or hide front and back ports separately on some systems. So although it
would resolve the issue it is not practically viable.
For example:
BIOS: Computer Setup — Security
Device Security
Allows you to set Device Available/Device Hidden (default is Device Available)
for:
● System audio
● USB controller (varies by model)

USB Security
Allows you to set Enabled/Disabled (default is Enabled) for:
● Front USB Ports
● Rear USB Ports

C. Interconnect the sense pin to the ground.
By interconnecting the sense pin to the ground the system thinks that the front
assembly is logically present.
I would highly recommend to use ohmmeter to check that the pinout on the front
assembly audio, USB and FireWire 1394 respective header is in accordance with
the images below. It should be enough to measure ground pins, which also
prevents possible damage to the motherboard. You may also use voltmeter to
check +5 V DC pins.

USB 1&2
Internal USB 2×5-pin header, blank key position pin 9.
Pin 10 NC is usually the sense pin. Although on some systems pin 9 can be
populated and used as a sense pin.
You may use a jumper to interconnect pin 10 (NC) with a neighbouring pin 8
(Ground). And that is it.

USB 3
Internal USB 2×10-pin header, blank key position pin 20.
Pin 10 USB 3 ID is the sense pin. It is necessary to interconnect it with one
of the ground pins 4, 7, 13 or 16. Unfortunately neither of these pins is a
neighbour with the pin 10. So probably the best solution would be to use an USB
3 internal cable with a plug and solder the pin 10 wire with one of the ground
pins wires and then cut off all unused wires.

####

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‎10-25-2017

08:41 AM

— last edited on

‎10-25-2017

11:07 AM

Retired

danny-r

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Hi I work in seosem.hr, digital agency. So at work we recently got in some HP 800 G1 Desktops, and they are causing us some trouble.

The graphics cards we are putting in them cover up the USB 3.0 header on the motherboard for the front panel, so we ended up getting USB 3.0 PCIE cards for the machines, which have a 19 pin usb 3.0 header that we can use. The problem is that everytime you boot the machine, it gives you a beep and throws up the error «922 front usb not connected». You have to press f1 to bypass the message and boot to windows. We determined it’s giving us the error because nothing is plugged into the motherboard usb 3.0 header, because when we plug the front panel in there(no gpu installed), the error is gone.

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‎10-25-2017

08:41 AM

— last edited on

‎10-25-2017

11:07 AM

Retired

danny-r

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Hi I work in seosem.hr, digital agency. So at work we recently got in some HP 800 G1 Desktops, and they are causing us some trouble.

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I originally had the HP 8100 EliteDesk, which uses the 531990-001 motherboard. The motherboard has two connections for the front panel USB ports. After switching the motherboard over to my DiabloTek EVO Mid Tower ATX case, I connected everything properly, including the two Front Panel USB connections on the motherboard — the only difference is that the plug that comes from the front panel to the FRONT USB 2 is not the same as the one that goes to FRONT USB 1. The FRONT USB 1 connector has two rows of pins, and the connector for FRONT USB 2 only has one row of four pins, so I positioned this connector onto the either the top (or bottom, I forget) row of pins.

My issue here is that all 3 of my front panel USB ports work, I just get an annoying POST error saying «921 — Front USB 1 not Connected, 922 — Front USB 2 not Connected» With an option to hit f1 to continue booting, f9 for boot menu, etc. My PC will boot fine if I hit f1, but this error prevents me from being able to restart my computer remotely, or automatically boot up, because I have to be there to hit f1.

Basically, I’m getting an error message for something that’s working.

This is the first connection coming from my front panel connected to FRONT USB 1: http://flylib.com/books/3/309/1/html/2/images/bpc2_0463.jpg

This is the second connection coming from my front panel(the one that I attached to one row of pins on the FRONT USB 2): http://www.kenable.co.uk/images/k-usb2-mb-head_i1.jpg

Just in case, this is my DiabloTek Case: http://diablotek.com/v2.0/index.php?option=com_virtuemart&Itemid=36&category_id=59&flypage=tpflypage.tpl&page=shop.product_details&product_id=97&vmcchk=1&Itemid=36

Has anyone ever encountered this issue, or know anything I could do to resolve this? I’ve tried disabling «Display POST messages» and enabling «Skip f1 prompt» in BIOS, but it did nothing.

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h3pio:Будь добр, расскажи подробнее, как замыкал пины. Работали именно передние порты?

Приношу извинения, что не по теме.

Вот хорошая тема по подключению материнской платы HP Z400 — http://www.overclockers.com/forums/show … -Gaming-PC
Только, в этой теме рассматривается материнская плата 1-й ревизии с 4-мя слотами под память. Но, в принципе, различий практически нет, за исключением подключения фронтальной аудио-панели — у меня устранить ошибку «Front audio not connected» удалось замыканием 2-го и 4-го пинов.
Так же, как и для HP Z420, рассмотренного в этой теме.
А по этой ссылке сервисный мануал на рабочую станцию HP Z400 — http://h20628.www2.hp.com/km-ext/kmcsdi … 9908-1.pdf

На странице 228 есть распиновка внутренних USB портов.
Pin 10 — это Sense, который нужно будет «замкнуть» на 8-й, рядом стоящий справа, пин. Я снял штекер с проводком с аналогичного разъема и припаял к 8-му проводу, в термоусадку место соединения, и штекер вставил в колодку.

Что касается 420-й материнки:

Собрал, наконец-то, свой комп на базе материнки HP Z420
Пытался разобраться с внешним USB портом, но, или у меня он подгорел, или там совсем нестандартная разводка…
Он желтого цвета, рядом с тремя внутренними USB портами синего цвета.
10-го пина нет, но есть 9-й. У меня 2-й и 4-й замкнуты между собой, 6-й, 7-й и 8-й сидят на корпусе. На 1-м пине питание + 5V

Ошибка #4
921-Front usb not connected
Пропадает, если замкнуть 7-й и 9-й пины между собой.

Отправлено спустя 26 минут 5 секунд:
Кстати, на HP Z400 в мануале есть разводка разъема «CPU Fan»
1 GND
2 +12V
3 TACH1
4 PWM
5 TACH2

В родной системе охлаждения для HP Z400 5-й пин (TACH2) замкнут на 1-й пин (GND)
Я так понимаю, TACH2 — это вход таходатчика 2-го вентилятора.
В системе охлаждения процессора HP Z420, установлено два вентилятора: один на проц, второй — на охлаждения мосфетов системы питания процессора и памяти. И там этот 5-й пин задействован. Но, не пойму, как можно раздельно управлять двумя вентиляторами через один PWM ?!
В руках систему охлаждения не держал, только по фото.

У меня установлена СО CPU CoolerMaster 212 Plus, 5-й пин не заземлен. Ошибка #7 ( 911 — cpu fan not detected ) не выскакивает.

Отправлено спустя 13 минут 44 секунды:
Кстати, есть еще одна нужная «фишка» — интегрированный СОМ-порт на материнке. Разъем черного цвета, находится рядом с Аудио разъемами.
В БИОСе я не нашел упоминания о нем… или плохо смотрел.
Но в мануале для HP Z400, на 230-й странице есть распиновка такого же разъема:
Pin Signal Pin Signal
1 — DTR1#
2 — RXD1
3 — CTS1#
4 — DSR1#
5 — TXD1
6 — RI#
7 — Ground
8 — Ground
9 — +5V
10 — +3.3V AUX
11 — RTS1#
12 — COM DETECT
13 — DCD21#
14 — -12V
15 — +12V
Позже, будет время, проверю.

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Status: Not open for further replies.

: Jul 3, 2018

: 1

: 0

: 10

: 0

I recently bought a HP 6300 elite SFF (small form factor) motherboard to put up a server in my workplace. So I don’t have the HP original chassis and as you know the motherboard will display this messages at the startup:

917-front audio not connected
921-front usb 1 not connected
922-front usb 2 not connected
512-Rear chassis fan not detected

F1:boot

Like this:
picture1

So the server won’t boot up unless someone presses the F1 key. That’s just stupid right? the bios setup has an <<<option>>> for this but it doesn’t do anything! the problem goes on!

The solution:

For the first 3 errors just put a jumper in each header like this:
image1

it will look like this:
picture2

As for the last one (512-Rear chassis fan not detected) what I did was simple, i took the sense signal from the cpu fan (the green cable in my case) and connected it to the rear fan header with a jumper cable like this:
picture3

jojesa

: Dec 6, 2006

: 6,994

: 502

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The options to disable them were not available in the BIOS, under Advanced and Security.

: Aug 1, 2020

: 1

: 0

: 10

: 0

This was super helpful! Thank you

Status: Not open for further replies.

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