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Power Supply requirements

Last response: in Systems
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April 17, 2011 10:54:10 PM

I had to buy a Power Supply since recently purchased HP workstation didn't have PCI-E power molex. The new one couldn't power the motherboard so naturally I thought I bought a defective PS and returned it to get a better one. This one also doesn't work.

I'm beginning to think the output of the power is the issue. I'm no expert on electric / power. I'm hoping someone here knows what problem I'm experiencing.
a c 1102 ) Power supply
April 17, 2011 11:37:00 PM

What is the exact model number of your HP workstation?
April 17, 2011 11:58:47 PM

HP Z200 workstation.
The one advertised on HP's website has updated components and no longer sell my version of Z200
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a c 1102 ) Power supply
April 18, 2011 5:14:48 AM
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When I look at the pinout of the 20-pin main power connector for the original HP Z200 power supply unit it doesn't conform to ATX standards. It looks to be proprietary because the HP power connector does not supply any +3.3VDC.

It doesn't look like you can just buy any ATX form factor power supply unit and expect it to work because it won't.

HP Z200 PSU Main power cable, P1

Pin : Signal
1 : GND
2 : GND
3 : –12V
4 : GND
5 : GND
6 : PS_ON
7 : GND
8 : Fan_CMD
9 : Fan_Tach
10 : GND
11 : 12VMain
12 : 12VMain
13 : GND
14 : 12V1
15 : 12V1
16 : GND
17 : 12VSB
18 : 5V
19 : GND
20 : 5V

Compare it to the ATX standard:
April 18, 2011 6:17:30 PM

ko888,
you are the man. I know the info you provided me with doesn't help my situation but I got a clear answer to the problem that was making me scratch my head.
a c 1102 ) Power supply
April 18, 2011 6:33:58 PM

struct said:
ko888,
you are the man. I know the info you provided me with doesn't help my situation but I got a clear answer to the problem that was making me scratch my head.

I've read this response in the HP forums when someone else also asked if the Z200's power supply unit could be upgraded:

"The official response from HP was no other power supply on the market will fit and even if one was found it would void warranty."
May 2, 2011 11:46:55 PM

Best answer selected by struct.
Anonymous
a b ) Power supply
February 20, 2013 12:28:42 AM

I had a problem with my Z200 when trying to install another PSU, HP does use a propiotery motherboard connector preventing the use of any other power supply with the system, however I did however manage to make a small adapter which allows any standard ATX power supply to be used with the propitory motherboard connector, it swaps the pinouts and contains a small DC-DC convcerter board to raise the standby voltage. I would be happy to make it for a small fee if anyone is interested, contact me at GeorgeBurgess24@Gmail.com
!