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quicksilver power supply in a gigabit ethernet g4?

Submitted by macg4 on June 21, 2007 - 11:36pm. Hardware Hacks

do u know if u can use a quicksilver power supply in a gigabit model. the wiring looks the same but i did notice the quicksilver ps has an extra connector w/ 4pins.i was thinking if u didnt use that extra connector with the 4 pins that it would work in a gigabit model. what do u think?

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PSU pinout comparison between

Submitted by eeun on June 21, 2007 - 11:41pm.

PSU pinout comparison between models is available Here

Clip the one 28V wire, and it looks like you're good to go.

PS - "you" is really easy to type. This isn't live chat, so there's no rush. Eye-wink

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cool thanks for the quick res

Submitted by macg4 on June 22, 2007 - 12:29am.

cool thanks for the quick response. i looked at the 2 pin outs ealier and thought that cutting the 28 v wire would do the trick. but wanted some other outside advice

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the quicksilver actually has

Submitted by macg4 on June 22, 2007 - 2:12pm.

the quicksilver actually has two high voltage pins instead of the one used in the Gigabit and DA and the voltage is slightly different.

Here's a diagram

http://www.xlr8yourmac.com/tips/MDD_ps_mods/MDD_PS_Mods.html

You can see when comparing the DA PSU with the QS, that Pin 22 is +28v and Pin 9 is unused in the DA while pin 22 is +25v and pin 9 is also +25v in the QS. You can probably get away with pulling pin 9 out of the connector and taping it up so it can't contact anything inside and short out, but the 3 volt difference on pin 22 may not work.