A 3D rendering of a compact, rectangular laboratory cart with shelves, designed for practical use. The cart has a modern and functional design, made of metal, with a height of 1.95 meters and a square base measuring 0.81 meters on each side. It features three evenly spaced shelves, each holding different rectangular blocks in vibrant colors: orange, blue, purple, and green. A separate side shelf supports an open laptop with a sleek, modern design. At the top of the cart, there is a curved ventilation duct in dark gray, arching upward. The entire setup is mounted on four spherical caster wheels for mobility. The image includes dimensional annotations, providing precise height and width measurements, and the overall scene has a clean, minimalistic, technical visualization aesthetic. Style: Minimalistic and technical, focusing on functionality and clarity with a CAD-inspired design.