Choose Options.   But thank you all for walking me through this.How did you find one specific to the z210?

Dell Optiplex Power Supply Connector Power Supply Model HP-150SS / PS-5231. I've been searching for hours with no luck.From the 7XX series to the current 10XX, scroll down and you can see that the recommended minimum power supply for the GTX 960, GTX 1060 or a Quadro P600- all very good performing GPU's, is 400W.I think changing the z210 to a third party power supply is impractical: the mounting points, the specification of the rails, different M/B connector and even the position of the IEC cord outlet may be  semi-impossible.My reasoning in trying the z420 600W PSU is that I have a z420 that arrived with a 400W power supply: DPS-400AB-13 B.  Original  z210 PSU's are called:  DPS-400AB-13 A and all of the specifications listed on the z210 supply are identical to the z420 400W supply as to: +12Xcpu, +12VS, +11Vsb, +12VG, +12VB.  It's quite possible that the 13 B is simply a revision number as the z420 was a V2 whereas the z210 usstarted on Core2 and E3 first version. Seems HP hass slipped here...to our detriment...I grabbed a stock 475W power supply off the shelf that had a 24 pin connector and a 4 pin CPU connector. Plug it in, small green LED on motherboard should light, then you can turn on the main switch and board should fire up and give you aI have the following cable, see attachment.The 6 pins are separate. 30cm ATX Main 24Pin to 6Pin PSU Power Adapter Cable 18AWG For HP Z220/Z230. It has separate plugs going in from the PSU to the motherboard, none of which I recognize...So modiffication one more time just switch green and yellow wire places. How am I supposed to replace the power supply? The specs are listed in a different way, but it had the same mounting points, simply plugged it in and it works flawlessly.  It's reasonable to assume that if A=B and B=C, then A=C.Bambi, I've built up a Z420 v2 with a brand new case/HP 400W power Z420 power supply (which has no PCIe supplemental 6-pin power cable), used Z420 v2 motherboard and spare parts.  Plus the HP OEM COA self-activation Restore discs to W7Pro64, then (still no charge) auto-update into W10Pro64.  I'm trying to see how low the cost can be.....Note that a GTX 960, GTX1060, and Quadro P600- good performers all, will run on a 400W.  Probably, the best GPU for cost/performance is a used GTX 750 Ti - and those run on a 300W. How to convert my power supply to feed the HP motherboard. 2 PCIe x16 Gen 3 Slots 16. In place of green wire you have to put yellow and yellow in place where was green before replacement. Depending on the power supply, the connector may contain one 12 volt rail in all 8 pins or two 12 volt rails taking up 4 pins apiece. I really appriciate your DIY attitude towards your machines and also the knowledge about it.Again according to the specs, both workstation can support up to a Quadro m4000 which can suck 120W when working hard. I have a GT970 I’d like to use for a graphics card but found out it requires 2-6 power connectors and a minimum 500w supply. These are low to mid end office machines that aren't designed for gaming or high end GPU work.Sorry this isn't good news for you, let me know if you need anything else.Gonna install chipset drivers next but that's not my job anymore. I tried a Quadro K4200 4GB- rated for a 500W power supply, in a Dell Precision 390 with 375W and it had then the highest 3D mark on Passmark for a 390. But I can give you some of the research I did.Here is a link to something I found on the topic:Apart from that, looking good here.amazon.com/dp/B01N7D6401/ref=cm_sw_r_cp_apa_i_fvumCbJ818D9TI want to do what livingnote says but how with my converter:But I don't know if the picture with the connections are the right one for my motherboard to power up. $19.99 $14.99. If you don't have 12VStby use a DC DC stepup converter or a wall wart PSU to get you started, wire + to purple, -/GND to black/PSU Ground and in you go. Worse still are standard looking components like ATX looking PSUs where the connectors are wired up in non standard way - which can catch you out. First of all congratulation on your New Machines. Unbelievably bad design.As to what PSU standards exist, there are many. Workstations are also more forgiving than we think- the PSU ratings must be conservative and have quite a bit of overhead. ATX to 6 +6 pin.But I seriously recommend a GPU overclocking tool, tweak the power limit so that it doesn't draw more than 120 Watts, if you go this route.This is the best video I found on the subject.Example site to get information:You'll need one of these to sync the power supplies.Also I would only recommend this for one card because it is very power efficient, and I would even underclock it if you have the option.m Merhaba .muratt Yardımcı olursanız sevinirimAnd one of these to extended the GPU outside the case for larger graphics cards if you have the small form factor model.Any idea what signal / ground / voltage etc could do the job?amazon.com/dp/B075VRMQ55/ref=cm_sw_r_cp_apa_i_mtumCbA4NQA49These types of PCs aren't really meant to be upgraded past hard drives, and ram, and some additional expansion cards.