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Pinout and circuit for the G4 Sawtooth switch cable

Joined
Dec 27, 2016
Messages
61
Motherboard
GA-Z170M-D3H
CPU
i5 6600 3.3Ghz
Graphics
Intel 530
Mac
iMac, MacBook, MacBook Pro, Mac mini
Classic Mac
20th Anniv. Mac, iMac, Plus, Power Mac, PowerBook
Mobile Phone
iOS
Took this a step further, no splicing of wires, no soldering, just used jumper cables, matched them up (based on your pin ID, tsk) to the front panel connector and mobo pins (specific to my mobo) as well as the speaker.

View attachment 211732
Just wanted to say thanks very much for this guide. Power on/off works perfectly and I have a glowing LED. Reset isn't doing anything, but I've probably wired something wrong. Your graphics and explanation were a lifesaver!
 
Joined
Jan 1, 2017
Messages
2
Motherboard
GA-H170M-DS3H
CPU
i5-6600
Graphics
GTX 970 SSC
This was a big help! I'm really glad someone took the time to do this. I have a curious question, though. I have a Sawtooth front panel and ribbon cable that I spliced according to the pinout in Post #1, and all the switches work, but oddly the Power LED is on all the time, even when the computer is off. It's a small thing, but I'm wondering why that would be?

I'm running a Gigabyte GA-H170M-DSH3, and the one change I made (accidentally) was wiring the PLED + to pin 10 instead of 9, giving me the yellow light.

Anybody have any ideas why the light is on all the time?
 
Joined
Feb 8, 2013
Messages
93
Motherboard
GA-H270N-Wifi
CPU
i7-7700K
Graphics
GTX 1070
Mac
MacBook Pro
Mobile Phone
Android
Took this a step further, no splicing of wires, no soldering, just used jumper cables, matched them up (based on your pin ID, tsk) to the front panel connector and mobo pins (specific to my mobo) as well as the speaker.
I don't get it. If you can just use jumper cables and you can get those cheap then why would anybody ever solder anything? Isn't using jumper cables so much more convenient? Would that work with QuickSilver or G3 b&w front boards too?
 
Joined
Sep 18, 2011
Messages
53
Motherboard
Gigabyte GA-H61M-D2P-B3 F10
CPU
i3
Graphics
GTX 1050
Mac
iMac
1.S3+ programming switch; Don't use.
2. No connection.
3.S2+ Reset switch.Use for reset switch + if you want
4. No connection.
5. S1 +; Use for Power Switch +
6. No connection.
7. Not useful (part of the apple circuit).
8. COMMON GROUND; Use for Power Switch -
9. Anode 1 (glows LED Green); Use for Power LED +
10. Anode 2 (glows yellow); Don't use.
Has anyone figured out the 820-1178-A? So far, I have...

1. +S3
2.
3. +S2
4. +LED (also appears that 7 (goes to 585 from 1), 8 (goes to 585 from 1), 10 (goes to 800 from 1) have some affect on current)
5. R1, R12(?) - doesn't work when using as power switch.
6.
7. -All
8. -All
9.
10. ? (goes to LED signal or something? Signal goes to 800 from 1)

I have all my ribbon-cable ends set up with the connector pins all receiving signal.
 
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