The iStarUSA 4U industrial rackmount chassis D Storm D-407P-DE4. Installed with 1xBPN-DE340SS enable 4x3.5" hot-swappable storage capability. It also supports up to seven add-on cards and total storage capacity up to 9 storage drives for RAID configuration. D-407P-DE4 provide your server or cluster maximum reliability and performance. Optional Aluminum Body reduces total chassis weight and also provides enhanced thermal cooling solution.