Custom 3D Printed 10" Rack Mount Holder Bracket for OptiPlex 3050, 5050, 7050, 3060, 5060, 7060 Micro PC 1U
This is designed specifically for a Optiplex 7060 MicroPC, and fits most other 3xxx and 5xxx series
This design lets you simply slide the PC in from the back. And thanks to the little rubber feet at each corner, you should find that it will press-fit itself into the bracket with the two front feet and hold itself nice and snug for interaction with the power button and front audio/USB ports without the need for any further securing.