Built with durable, SGCC steel, the VSK4000B-U3 is a tough case meant to last for several builds without fail. The VSK4000E-U3 also meets Thermally Advantaged Chassis (TAC) 2.0 guidelines and is upgraded with two USB 3.0 ports, nine drive bays, and seven expansion slots. Building a system starts with buying a case, then comes the parts that goes into it, which the cost can add up very quickly. The VSK4000B-U3 is here to provide the basic platform to start building your very own system. It’s humble design and practical functionality contains the fundamentals for a performance chassis. The VSK line is designed to be a stepping stone for those who want to upgrade their system later on. Each chassis devotedly serves their purpose as a cost-effective, unforgettable part of your system building experience. Specs_ Model_ VSK4000B-U3 Unit Dimensions_ - 16.2” (H) x 7.3” (W) x 17.3” (D)  - 412 mm (H) x 185 mm (W) x 440 mm (D) Water cooling support_ rear water cooling grommets Front Ports_ - 2 x USB 3.0 - Audio In/Out Case Type_ Mid-Tower Cooling SystemFront Ports_ - 1 x 120 mm rear exhaust fan - 1 x 120 mm front intake fan (optional) Drive Bays_ - 3 x 5.25” external drive bays  - 1 x external floppy drive bay - 5 x 3.5" internal HDD bays Motherboard Support_ Standard ATX, microATX, Mini-ITX Color(s): Black Weight_ - Net Weight 11.0 lbs / 5.0 kg  - Gross Weight 13.2 lbs / 6.0 kg Expansion Slots_ 7 expansion slots Warranty_ 2 year UPC#: 0-761345-92044-5