- Patented Aluminum Front Panel with Locks. - Front Access USB2.0 x2. - Removable Air Filter. - Power and HDD LED. - Power and Alarm Reset Switch. - Standard I/O Shield. - Optional Aluminum Chassis. iStarUSA 4U industrial rackmount chassis D Storm D-400-6SE. Combine with BPU or T Series enable hot-swappable storage capability. It also supports up to seven add-on cards and total storage capacity up to 5 storage drives for RAID configuration. D-400-6SE provide your server or cluster maximum reliability and performance. Optional Aluminum Body reduces total chassis weight and also provides enhanced thermal cooling solution.