2 x 3.5/2.5' SATA III Drive Bays 2 GHz ARM Cortex-A55 Quad-Core CPU 4GB RAM 1 x 2.5G Ethernet Port 1 x Gigabit Ethernet Port 1 x USB 3.1 Gen 1 2 x USB 2.0 AES 256-Bit Volume Encryption AI Acceleration Hot-Swappable Drive Bays QTS 5.1.3 Operating System