In terms of storage capacity, the Q300L V2 offers one 3.5-inch shadow bay and two 2.5-inch shadow bays. The cooling system is compatible with various fan and radiator sizes: two 120/140mm fans or a 120/240mm radiator at the front, two 120mm fans on top, and one 120mm fan at the rear. The case accommodates a power supply unit up to 160mm in depth, a CPU cooler up to 159mm in height, and a graphics card up to 360mm in length. The dimensions of the Q300L V2 are 230mm in width, 387mm in depth, and 383mm in height, with a total volume of 29 liters. External access ports include two USB 3.2 Gen 1 Type-A ports, one USB 3.2 Gen 2×2 Type-C port, and a 3.5mm audio jack, ensuring comprehensive connectivity options.