My 486 HP vectra has exactly the same PSU. In fact, I think that all hp vectras from the early-mid 90's had this PSU

However, you won't be able to fit these anywhere else than in another HP vectra ...

Deksor wrote:

My 486 HP vectra has exactly the same PSU. In fact, I think that all hp vectras from the early-mid 90's had this PSU

However, you won't be able to fit these anywhere else than in another HP vectra ...

I was afraid you were gonna say that. A 100 Watt BEAST, in a really ugly form factor.

Another option would be to figure out which pin does what, and then solder the special HP connector to a regular power supply. Of course, there is the possibility you will discover that even the power supply is non-standard in its voltages, but I somehow doubt that a little...

pretty much worthless without the case imho. if the case is a lost cause, pull teh cpu/ram and scrap the rest.

Well, you could basically regard the case, the mobo and the PSU as a unit, it'll be hard to use any of them without the others. You might however want to consider keeping it all as is if you want a ppro machine. Can't remember ever seeing a socket 8 whitebox back in the days, standard AT/ATX socket 8 mobos are probably extremely rare here.

Out of curiosity, is it the one listed on Tradera last week? Saw it too, but decided it wasn't worth the ride to the other side of town 😁

It should not be too difficult to rewire a usual ATX PSU to use with these connectors. All you need is a multimeter to find out all the voltages on the original PSU wires when it is on. The tricky part may be a PS-ON signal. I recall old HP PSUs did not provide HIGH level on PS-ON pin, it was the mobo that pulled this pin to +5V from standby. If it is a hard on/off (AT-like) PSU there is no issue at all - just use a usual ATX PSU and wire a switch between PSU's PS-ON and GROUND wires after rewiring it for HP connectors. If it is a soft on/off PSU (ATX-like) you will need to find a PS-ON wire on the original PSU first. Plug it in the outlet and measure all pins against ground while the PSU is off. If you are lucky enough, there will be 2 (or more, if there is a good drain on +5V Standby curcuit) wires with +5V. One of them will be PS-ON. The PSU may actually start when you measure the PS ON pin. Or might not. You can use a resistor like 100 Ohms, which will give you a current of 50 mAmps, between these +5V and GROUND and see which pin makes PSU start. This pin will be PS-ON pin. Just don't leave the resistor connected for long. Connect, if the PSU doesn't start within a sec, it won't start, so disconnect.
If you are not lucky though, you will need to match all +5V pins on the PSU plugged to the outlet, but not connected to the mobo with +5V pins when PSU is plugged both into the outlet and the mobo. You will probably find that there is an extra +5V pin present when the PSU is plugged into the mobo. This would be a PS-ON pin.

If you have the riser slot you might be able to mod a desktop case to fit it in. W/o the riser, the board is worthless. I thing the PSU's pinout is regular AT. Not sure tough so don't take my word for it.

kaputnik wrote:

Out of curiosity, is it the one listed on Tradera last week? Saw it too, but decided it wasn't worth the ride to the other side of town 😁

It is! 11 SEK isn't too bad for a PPro cpu, SB 16, and Matrox gfx card, and I live on the "correct" side of town. 😁

It came complete, with the expansion riser card and evertything. It even worked, but I don't have space for this kind of case.

I'll poke around a bit with the PSU and see what I can find. Thanks for the tips, everyone!

hp vectra pinout;

http://pinouts.ru/Power/hp_vectravl5_power_pinout.shtml

other non standard pinouts listed too for other hp models

http://pinouts.ru/Power/#HP

BloodyCactus wrote:

hp vectra pinout; […]
Show full quote

hp vectra pinout;

http://pinouts.ru/Power/hp_vectravl5_power_pinout.shtml

other non standard pinouts listed too for other hp models

http://pinouts.ru/Power/#HP

Cheers! I'll see if it is worth mucking together an adapter or if I'll just keep the small parts.