Posted by Corvet on April 3, 2011, 9:01 am
  I installed Asrock P4i65G motherboard and canno identify how to connect
front panel Audio cables: the manual is not very clear.
MB manual:
ftp://174.142.97.10/manual/P4i65G.pdf

page 17:  Front Panel AC’97 Audio Header
(8-pin AUDIO1)

Problem is that  pin-definition on cables from front panel and on Audio
Header on motherboard is different.
Match only 'ground'(GND) wire, the other names differs. There is two 4-wire
cables connected to front panel, I need connect it to Audio header. Each
pair consist from 4 wires: 'ground', +5V, D+, D-
I connected 'ground' wires to matching pins, but what is "D+", "D-" wires?
Also there is no +5V pin on MoBo Audio Header.


Posted by Grinder on April 3, 2011, 9:21 am
 On 4/3/2011 8:01 AM, Corvet wrote:

 > Also there is no +5V pin on MoBo Audio Header.

Those cables from the front panel are for USB ports.  I wouldn't connect
them to your motherboard's audio header.

You aren't pulling me leg with this are you? April 1st has already past.




Posted by Paul on April 3, 2011, 10:30 am
  Corvet wrote:

Does your computer case have a make and model number ?

If not, do you have a web page for the place you bought it from, so
we can see it ?

Some computer cases, if they don't come with a sheet of paper in the
box, there will be a GIF or JPG picture on the manufacturer site,
with the cables and their pin names shown.

*******

For audio, look for a headphone jack and microphone jack on the
front panel of the computer case. Try to figure out, where the wire
bundles goes, as it comes from the connectors on the front panel, so
you'll be grabbing the correct set of wires.

There are two audio standards. Some pin names, to give you some hints,
are here.

http://attachments.techguy.org/attachments/159615d1258391131/frontpanel.jpg

+5V, D+, D-, GND is for USB. You can see some examples here. The motherboard
headers aren't all exactly the same way. The more modern a motherboard
is, the more likely it'll be standard.

http://www.frontx.com/cpx108_2.html

The audio doesn't need 10 wires, so you don't have to count to ten or anything.
Audio can be done with as few as five wires, sometimes seven. You'll notice, that
not all the information you can find, uses consistent names. And that's what
we're
here for, to sort them out. (Put your signal names from the computer case wires
in a list and post them for more help, if you're still confused.)

http://www.frontx.com/cpx110.html

Firewire has signal names like TPA+, TPA-, TPB+, TPB-. There have been two
motherboard connector styles for Firewire. And front panel Firewire (1394a)
can come in 4 or 6 pin variations. The 6 pin front panel connector would be
the version that carries bus power (from VP and GND pins).

http://www.frontx.com/cpx105_2.html

Anyway, those are some things you can find in your front panel wiring. On
some cases, there might be three cable bundles, and you have to be real
careful to put them on the correct motherboard connectors. You can damage
the motherboard, or a very expensive peripheral, if you wire them up wrong.

*******

Also, another point. You don't *have* to wire up the front panel. It isn't
mandatory. The left over cables can hang down. Now, even though I know exactly
how to wire that stuff, I don't have it wired on any of my computer cases.
And the reason for that, is my computers are always oriented at waist height,
accessible from both front and back. (The computer sits on my computer table.)
And so, I don't need front panel wiring. Sometimes, I even tear out the unneeded
cable bundles.

One reason for keeping the computer off the floor, is so it sucks in less
dust. And the bonus for keeping it off the floor, is I can access the
back panel easily.

    Paul

Posted by Corvet on April 3, 2011, 11:03 am
 "Paul" wrote:


4-wire

wires?

http://attachments.techguy.org/attachments/159615d1258391131/frontpanel.jpg

motherboard

anything.

notice, that

what we're

wires

(1394a)

be

wrong.

exactly

height,

table.)

unneeded

------------------------------


ohh, I have tangled wires, confused. Good thing is I have not connected +5V
cables there, I only connected the rest wires. Can this damage Audio though?
I dont think I can find computer case manufacturer, its just sort of cheap
generic box. Its very difficult no find where these wire bundles connected
on the front panel, as it deep inside, not visible, only via disassembling
the case. I will look tomorrow and respond back.





Posted by ~misfit~ on April 8, 2011, 9:20 pm
 Somewhere on teh intarwebs Paul wrote:
[snip]

A-men brother!

I've been taking a few pics of the insides of boxes that have been bought to
me 'to fix' and some of them would have enough 'dust' inside to fill up a
plant pot and grow something. One day I'll collect them from all of their
various folders and put up a 'rogue's gallery' somewhere. (Sadly I didn't
start taking pics until quite recently, some of the worst machines won't be
represented.)

In various cases dust intake / build-up has caused failure / destruction of
graphics cards, HDDs, motherboards (especially those with on-board graphics)
and even PSUs!

Around 60% of the time a good clean-out 'fixes' the problems they've been
seeing (spontaneous re-boots, BSOD, ssslllooowww machines due to CPU
throttling, screaming / noisy fans). However in the other 40% of instances
components are damaged beyond reasonable reapair.

It's my considered opinion that only an idiot would keep a forced-air cooled
box full of delicate electronic components at floor lever where the most
'dust' is. If the idiot also smokes tobacco and keeps felines the issues are
multiplied by a factor of 5x for each.

Also, as you so rightly mention, USB and other ports are much easier to
access at desk hieght. Less back strain. You'd think it would be obvious....
--
Shaun.

"He who fights with monsters might take care lest he thereby become a
monster. And if you gaze for long into an abyss, the abyss gazes also
into you." Friedrich Wilhelm Nietzsche



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