HumanCentric power supply holder for Dual VESA sleeve compatible with Dell Optiplex micro for factor, VESA arm mount fits micro Dell OptiPlex MFF 3000, 3040, 3046, 3050, 3060, 3070, 3080, 5000, 5050, 5060, 5070, 5090, 7000, 7040, 7050, 7060, 7070, 7080, 7090, and more. With metal box for power adapter. It does not fit OptiPlex tower or small form factor. Fits all Dell OptiPlex micro computers size 1.4" x 7" x 7.2" (36mm x 178mm x 182mm).