High Point 4U 24-Bay Thunderbolt Storage Rackmount and PCIe Expansion Solution NA381TB Solid 4U 24-bay rack mount chassis Dual Thunderbolt 2 Ports / Daisy Chain support up to 6 devices Includes Rear-Panel for Mac-Mini 24x 3.5" Disk Trays - supports 24 SAS/SATA (6G/3Gbps) hard drives Up to 3 PCIe expansion slots for Fiber-Channel / SAS/SATA RAID HBA / 10G networking / Media Capture full-length, full-height PCIe cards with Thunderbolt Aware Drivers (check Highpoint's website for full compatibility list) Individual key lock on each HDD tray for physical security Server-grade 650W redundant power supply for zero-down-time