[Perfect design]: This cart is adjustable (Length:15.74-21.25inches,Width:7.48-13.38inches) allowing it to accommodate most of computers CPU.The gap on the surface of the pc bracket provides better ventilation and cooling for the host and protects the normal use of the computer. In addition, we also present a Velcro strap to help you solve the storage of the computer data cable. [Free movement]: The PC bracket is equipped with 4 casters and brake lock angle wheels, which can easily adjust the fixed stability through the lock angle wheels.