Case without area to mount Power supply

My employer is a small business that builds, refurbishes, and sells computers. Up until yesterday we have been selling a Dell with a Q1900 CPU 4gb of Ram and a 500gb HDD with windows 7. We sold the last one yesterday. Now we are looking into building a super cheap low end system comparable to the dell. I have the rest of the parts chosen but the motherboard I want to submit to my boss is the AsRock N3150DC-ITX which comes with a power brick for the power, since there is no onboard 24 pin header for a normal PSU. Anyway I am looking for a case that does NOT have any mounting options for a Power Supply. Any ideas?

Any of these suit your fancy?

http://www.logicsupply.com/products/components/cases/mini-itx/

They look great. However my mistake I forgot to mention that my employer requires a full 5.25" optical drive bay. We are also .trying to do this at keeping cost down. The dell that was sold, sold for around 500

I remember NCIX Tech Tips had a video about a very small case and a power brick instead of a power supply, but I don't remember if it has a 5.25'' bay though

That's gonna be a specialty case with a special price.
Because you're going to be shooting for as low price as possible..
Select a cheap, regular case that fills your requirements > plonk ATX PSU blanking plates on them. Or SFX if case has SFX and so on...
Problem solved.

http://www.kustompcs.co.uk/acatalog/info_1618.html
http://ecosmartpc.com/blanks.html
And so forth. There's also blanking plates with a fan mount/hole on them.

Or go to a local steel shop or whatever and ask a quote for that kind of thing.
Shouldn't be all that expensive to have them made if you can order "a few" at once.
A plate of aluminium or steel, cut to dimensions, drill four holes, tap the holes.
Rinse and repeat x times.


How small do you want the computer to be? Here's a mITX case with 1x external 5.25", 1x internal 3.5" and external 3.5". Outside dimensions 220x135x328mm resulting in under 9.8 liter volume.
http://www.spire-corp.com/computer-cases/powercube-210-spm210b-300w-pfc/
(edit: oops, that actually comes with a PSU (craptacular more than likely), so probably not a choice for you)

Here's a nice tool for researching the case (notice the "capacity" filter if you wanna filter out cases bigger than x liters)
http://geizhals.eu/?cat=gehatx&xf=1002_10~539_1~533_1#xf_top

The AeroCool CS-101 looks nice
http://geizhals.eu/aerocool-cs-101-en55200-a1322122.html?hloc=at&hloc=de&hloc=pl&hloc=uk&hloc=eu