Front ventilation structure Effectively keeps HDD cool & reduces internal heat through the front vent. Up To 4 System Fans Up to four fans can be mounted including one back standard-equipped fan. Bottom PSU Installation Supports bottom PSU installation for effective cooling of PSU & inner space of case Black Coating luxurious interior with black coating finishing touch.. USB3.0 & Convenient Interface USB (Universal Serial Bus) 3.0 ports, audio socket, power & rest buttons set in the front for user convenience. Tube Apertures for Liquid Cooling Systems Tube apertures are provided at the rear of the case for convenient water cooling set-up & maintenance. Simple Design, High Compatibility Efficient layout allows the installation of Micro-ATX/ Mini ITX main board & VGA/PSU/ODD, despite of its slim design. Dust Filter Dust filters installed on the front, side & bottom prevent dust from entering. High Quality VGA Card 250mm~300mm high performance VGA card can be installed. Safe Edge Molding Safe edge molding for safer installing environment. HDD/SSD Installation Easily install HDD & SSD at the same time. Anti-vibration & Sound Absorption Rubber Anti-slip rubber at the bottom of the case & the PSU helps to eliminate vibration sound. CPU cooler replacement & cable management holes No need to touch the M/B for CPU cooler replacement through CPU cooler mounting holes. Cable holes also provided for neat cable management Spacious Interior Provides spacious interior with 4 PCI extension slots.