This is an Apple PowerMac G4, with 466Mhz processor, 128MB of SD ram, ATI graphics. See the photographed sticker for specific model number/specs. No HDD is included.
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This unit was pulled from a working environment, however I lack the means to test the display output. If you really need one, I probably have a box copy of OSX Panther (10.3) if you require an OS, but you should be able to get an image online, etc.
Let me know if you have any further questions.