K550 is a mid-tower for general users in emerging markets. One pre-installed, 120mm, red LED fan is included behind the armor-inspired front panel. It supports up to 7 HDD bays for plenty of expansion and cable management. High-end graphics cards, like NVIDIA GTX690 and AMD HD 7990, can fit inside after removing the 1st HDD cage. Up to seven fans are supported, including two on the windowed side panel to keep graphic cards cool. Additionally, the USB 3.0 port has 10x faster file transfer and 2x faster phone/tablet charging than USB 2.0.