iStarUSA 4U Compact Stylish 4x3.5" Trayless Hotswap Rackmount ChassisThe iStarUSA D Storm D 407P DE4 is a compact yet powerful 4U rackmount chassis engineered for demanding storage, server, and clustering environments. With four hot swappable 3. 5" bays delivered in a trayless backplane, this chassis simplifies maintenance, minimizes downtime, and enables flexible RAID configurations. Designed to handle enterprise workloads, it supports up to seven add on PCIe cards and scales to as many as nine drives when configured