Description:The 1U desktop type trayless enclosure supports plug and play 4 x 3.5" SATA/SAS hard drives without any tool and screws via four eSATA ports for high speed data transfer rate. This device is also compatible with the latest 6.0Gb/s hard drives. It is a simple solution to provide extra space storing data. This solution also comes with 3 silent cooling fans and aluminum case, and it offers optimal heat dissipation with low-noise quiet operation. This is designed to provide high quality video and audio solution for our customers.Features: Supports 4 x3.5" SATA I/II HDDs Trayless and Tool-free Design for HDD Installation Smooth HDD Release Mechanism Design Multi-function LED Indicators for System and HDD Activity 4x eSATA Ports for High Data Transfer Speed 3x 40mm Silent Cooling Fans. Quiet Operation for Audio/ Video Editing Aluminum Enclosure for Best Heat Dissipation Rackmount Convertible (handle required, P/N:GAGE-RK1U-BK) Supports 3TB HDDs Supports 6.0Gb/s hard drives