The Shuttle OMNINAS KD20 is the company’s first NAS server. It features a pair of hot-swappable drive bays that can hold 3.5-inch HDDs (hard disk drives) with capacities of up to 4 TB each. The Shuttle OMNINAS KD20 supports RAID-1 mode (mirroring, for high data security), RAID-0 (striping and JBOD modes. The OMNINAS KD20 NAS server also features an 80mm fan for cooling, an I/O panel with one USB 3.0 port, two USB 2.0 ports, an SD card reader and Gigabit Ethernet.