Full Tower PC Home/Office ATX, EATX, micro ATX, Mini-ITX Supported HDD sizes: 2.5,3.5" Number of 2.5" bays: 2 Number of 3.5" bays: 6 Number of 5.25" bays: 1 Side window Illumination SGCC, Tempered glass White Designed in collaboration with Watermod France, The Tower 900 Snow Edition by Thermaltake represents Thermaltakes passion for innovation, the spirit of Watemod France, and our vision to expand chassis design for enthusiasts to build into a new era of ESPORTS modding culture. The Tower 900 is the premium choice from TT Thermaltake supporting a vertical mounting design, high quality 5mm thick tempered glass panels, and unrivaled expansion capabilities for massive custom liquid cooling systems. Design Certification Tt LCS Maximum PSU length 22 cm Maximum graphics card length 40 cm Maximum CPU cooler height 26 cm LED indicators Yes Illumination Yes Suitable for Home/Office Side window Yes Number of expansion slots 8 Number of internal 3.5" bays 6 Number of 2.5" bays 2 Number of 3.5"