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Adding non standard devices powered off psu

G

grdoorguy

n00b
Joined
Mar 6, 2009
Messages
26
Looking for some help with a bad idea. I have a new mini-itx case and power supply on its way. I already had a intel mini-itx mobo so I loaded pfsense on it and got it configured. Now here is where the bad idea kicks in. This case will basically have nothing inside of it except the motherboard and a cf so what I was hoping to do was put a ubiquiti router board with a 2.4g wireless card and a small 5 port switch in the drive bays. Route a couple bulkhead connectors from the switch to the back of the case and voila I have a firewall, ap all in one case for a lot less than a new Alix board would run me.

The problem is powering up my two extra devices. I need 12v 1amp connections for each device. Any ideas?
 
You could just power them off one of the +12V rails. Easy enough to wire up.
 
Which is what I had thought about doing but the amps are wrong. I think I would have to build a board to change that and now theres math involved and it all ends with fire. I was hoping someone new of an adapter to convert the molex 12v 2.5amp "i think" rail to a 12v 1amp.
 
A +12V wire will only supply whatever current is drawn from it. The "1A" rating of your router is merely the minimum amount of power capacity that whatever power supply you use must have.
 
^ what he said, your fan doesnt catch fire on a 12v molex even though it only needs 0.09 A
 
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