Z9 Plus supports bottom PSU installation & provides an aperture for cable management to make better use of interior space. ** Front Mesh Cover for High Cooling Performance** The front mesh bay cover provides cool air into the system while dust filters prevent dust from entering. ** Supports up to 7 System Fans** Up to 7 system fans are installed to expel hot air effectively from the case. ** Supports Bottom PSU Installation & Aperture for Cable Management** Z9 Plus supports bottom PSU installation & provides an aperture for cable management to make better use of interior space. ** Black Interior Coating** The interior of chassis is coated black to provide a sense of unity & elegant design. ** Tool Free HDD Installation with Anti-Vibration Rubber** The server-type Tool-Free HDD Mount Trays allow easy HDD installation/removal & maintenance. ** Spacious Interior for Installing 290mm Card** The interior has been designed to be spacious for easy installation & maintenance of various components. ** Front I/O module for Easy Component Change** Front I/O module enables the location of DVD-ROM & other components to be changed easily according to user preference. **2-Channel Fan Controller & Temperature Display** 2-Channel Fan controller for adjusting the system temperature & external LED temperature display are provided. By controlling noise & interior temperature with the fan speed, system can be operated at the most optimal condition. ** Side Acryl Tuning** Side Acryl Tuning is provided for users to view the interior of gaming system. ** Supports 4 USB (Universal Serial Bus) 2.0** Front I/O module provides 4 USB (Universal Serial Bus) 2.0 ports for user convenience & expandability. ** Supports Front, Top, Side 120mm Blue LED fan & Rear 120mm Fan** Four 120mm fans deliver maximum cooling, & 3 Blue LED fan emphasizes cool aesthetics. For Z9, 1 front 120mm Blue LED & 1 rear 120mm White Impeller fan are provided. ** Front & Bottom