The red PC-V351 has no sharp edges inside the case so users don’t need to worry about cutting their hands on jagged metal edges. The thermal dynamics are considered extensively and the design ensures the complete system can work at a low temperature while still remaining relatively quiet. The motherboard tray can be easily removed so the user doesn't need to work inside the case. The PC-V351R can fit a standard Micro ATX system and a standard ATX P/S2 power supply. This case is equipped with an anti-vibration kit to absorb the noise. The EMI spring absorbs the vibration, while allowing the top cover to be opened and closed easily. There are four high quality aluminum case stands equipped with rubber pads to absorb the vibration, and prevent scratches to the equipment underneath. There is also a HDD anti-vibration kit which uses rubber rings to absorb the virbration to reduce the noise. This case also has a fan anti-vibration kit to absorb the virbration and reduce the noise. The PC-V351R is equipped with two 120mm intake fans, with low-RPM and high air flow, these fans are extremely silent. There is an extremely silent 80mm exhaust fan at the rear of the chassis. The PCI brackets with vent holes help the cooling of PCI add-on cards. The user can choose which side the optical drives face as there are openings for 5.25" and 3.5" at the right and left hand side of the case. The multimedia port connectors follow international specification standard, with one connector for easy installation. Audio supports HD Audio and AC97 Audio design for batter compatibility and all I/O ports are located on the side panel allowing easy access. This case has USB2.0 x 2, IEEE1394 x 1 and HD+AC97 Audio, it also has 2x 5.25" Drive Bays (external), 1x 3.5" Drive Bay (external using 5.25"), 2x 3.5" Drive Bay (internal) and 4 expansion slots.