retro computer 3d model

3D asset, detailed retro 1990s desktop computer setup, isolated on transparent background, no background. Three separate realistic objects: CRT monitor, Midi-Tower case, mechanical keyboard. High fidelity, precise geometry. Keyboard has a strict 104-key US ANSI layout where every keycap is modeled as an individual, sharp rectangular volumetric block with deep cutouts and distinct 1.5mm gaps; includes a long spacebar, separate arrow block, and numeric pad, strictly preventing keys from merging into solid rows. Bulky CRT monitor with a convex glass screen, power button, and conical base. Vertical PC case with modular bays: top CD-ROM drive, 3.5-inch floppy slot, and oval power button. Aged matte beige plastic, clean topology, studio asset look.