Abit PN5 rev.1.21 - weird pin-outs \ VOGONS

Abit PN5 rev.1.21 - weird pin-outs

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First post, by OSH

Posted on 2023-05-14, 16:46

OSH Offline

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Well I'm ran out ideas. I have Abit PN5 motherboard revision 1.21. I'm trying to connect right the wires for Power LED, Turbo LED, Speaker, Reset and Turbo switch. I found a manual for this board, but pin-outs are completely different than on mine board! I attach a photo my board and pin-outs from manual.
This is my board:

This is pin-outs from manual

So as you see, they are completly different.
And in the manual I read, speaker connector pins are 11-14
but here 19,17,15,13.
Has anyone such mainboard and tell me, how can I right connect these wires?

Reply 1 of 5, by Dorunkāku

Posted on 2023-05-14, 17:12

Dorunkāku Offline

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The correct jumper manual for your board:
https://theretroweb.com/motherboard/manual/35099.pdf

There is a typo in the speaker pin numbers, it should read 13/15/17/19.
The power led+ goes on pin 1 and the powerled ground goes to pin 3.

Reply 2 of 5, by bogdanpaulb

Posted on 2023-05-14, 17:34

bogdanpaulb Offline

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You have the manual here https://theretroweb.com/motherboard/manual/35099.pdf, the pins are numerated on your motherboard connector, starts with 1 and 2 on the upper part of the connector and ends with 19 and 20 lower part of the connector in the picture.

Reply 3 of 5, by OSH

Posted on 2023-05-14, 18:52

OSH Offline

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Dorunkāku wrote on 2023-05-14, 17:12:
The correct jumper manual for your board: https://theretroweb.com/motherboard/manual/35099.pdf […]
Show full quote

The correct jumper manual for your board:
https://theretroweb.com/motherboard/manual/35099.pdf

There is a typo in the speaker pin numbers, it should read 13/15/17/19.
The power led+ goes on pin 1 and the powerled ground goes to pin 3.

Thanks! But unfortunately, no matter where I connect these both wires (green and white), LED Power is off) probably I damaged it 🙁… and TURBO LED is still on, no matter, the TURBO button is pushed or released. TURBO SW connector has three wires, but on this schema I see any point, where I can connect ist…

Reply 4 of 5, by bogdanpaulb

Posted on 2023-05-14, 19:15

bogdanpaulb Offline

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Green goes to pin 1, white to pin 5. Turbo sw has only 2 wires , the 3 wires one is used with a speed display https://newsquick24.com/tech/in-older-pcs-wha … e-turbo-button/ and connects to it, then from the display pcb comes a 2 wire connector that plugs in to the motherboard. Your case(386/486 era) is older then the motherboard.
You can remove one pin from the side of the connector to make it in to a 2 wire type.
Also on some 'newer' motherboards (pentium) there is no physical place for the turbo sw Turbo switch functionality on high end 486 & early Pentium 1 systems

Last edited by bogdanpaulb on 2023-05-14, 19:31. Edited 1 time in total.

Reply 5 of 5, by OSH

Posted on 2023-05-14, 19:27

OSH Offline

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Joined: 2007-10-28, 23:34

Yeah, you had right, POWER LED is now on! Do you think, this "TURBO" button is useless in this board? But why it has still TURBO LED?

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