I read http://h10032.www1.hp.com/ctg/Manual/c04331099 and down about page 123 I see the power switch which you will have to transplant and install in your new case along with it's wiring.
I have always used a pro desk 600 G1 from HP and I have changed cases but I didn’t think about the power switch and won’t know how to connect it can anyone help me?

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