The Thermaltake V21 Core is a mini tower
PC case which is able to accommodate mini-ITX and micro-ATX motherboards and big cooling solutions. The entire top and front is made of mesh with a different texture while the top also features a removable dust filter. All panels of this case share the same size and attachment system
so it is possible to exchange them without any problem. Since the bottom panel is
also removable and replaceable, it is also possible to change the orientation of the internal components. Overall, this model
features two mesh panels, one with big window made of plexiglass and one with four plastic feet.
At the front left area you can find the I/O panel with 2x USB 3.0 and 2x audio jacks, as well as two buttons for power on and reset. The rear panel is also very standard, as you can find an opening in the top for the 120 or 140mm fan and the motherboard I/O panel. The Core V21 features five expansion slots and one rubber grommet openings meant for the pass-through of liquid cooling pipes. In the lower part you can find an opening for the ATX power supply. The bottom of the case is equipped with four plastic feet that raise and stabilize the rigid case.