ATX power supply for wrt54g and NSLU2 - possible or not?

Discussion in 'Modding Forum' started by DocPL, Jan 1, 2007.

  1. DocPL

    DocPL LI Guru Member

    Hi all.
    I have an idea to replace PSUs of my 2 wrt54g , NSLU2 + HDD and Motorola cable modem (PSU 5v 1A) with one small ATX PSU. I don't have electronic experience at all and I don't want to fry my stuff. So the question is : Is it possible to use one ATX PSU to power 2 wrt54g, 1 NSLU2 with HDD (as for HDD I know that it can) and my Motorola cable modem (5v 1A). As for the voltage it seems to be OK since in ATX we have 12V and 5V lines - put what about amps ? Do you have any suggestions how to make this mod ?
  2. mstombs

    mstombs Network Guru Member

    I am not really sure why you want to do this but I'm sure a small ATX supply would have more than adequate current rating on both its 5V and (multiple?) 12V rails (look in the manual or on rating plate for actual numbers). You have to make a link on the motherboard connector to simulate the 'power on' button and lots of custom cables/connectors to enable the voltages on the device connectors. One thing I'd be wary of is overload protection - the existing PSUs will contain small fuses which protect the cables/ devices from obviously dangerous consequences of component failure - An ATX PSU would happily supply 10s of Amps and not cut the power. So when you add small inline fuses to each output its getting pretty messy isn't it?
  3. sutil

    sutil LI Guru Member

    @ DocPL
    you can use an ATX powersupply to power up your wrt54g or even wap54g or the both of them at the same time... in my case i have wap54g and wrt54g but the problem is i lost its power adapters so i decided so check the power ratings of the 2 devices then to save me from buying 2 new power adapters for my linksys i use the ATX power supply of my other pc to power up wrt54g and wap54g since both of them is rated for 12 volts using ATX seems no harm and it will also increase your transmit power if you are using hyperwap or hyperwrt using it on stock is OK
  4. u3gyxap

    u3gyxap Network Guru Member

    Older AT would be better, because of the simple On/Off switch. ATX would work just as fine, though you will have to spend few minutes making it always running.
    And yes, any ATX power supply will be more than enough to power 2 WRT54G, NSLU2 ,HDD and a Cable Modem.
    2xWRT54G = 12V 2A
    NSLU2 = 5V 2A
    HDD = 5V 0.5A, 12V 1.5A
    Cable modem = 5V 1A.
    Total = 3.5A 5V and 3.5A 12V. About 80W.
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