QNAP TS-253B-4G 2-Bay NAS Enclosure - Intel Celeron J3455 Processor (2M Cache, 1.50 GHz, up to 2.3 GHz, 4 cores), 4GB DDR3L RAM (2 x 2GB, no slots free, 8GB Max), 4GB Flash Memory, Drive Interface: 2 x 3.5 inch/2.5 inch SATA Hard Drive Bays, Hot-swappable, Up to 24TB Max, Built-in Speaker, Connectivity: Front: 1 x USB 3.0, 1 x USB 3.0 Type-C, SD Card Reader, Rear: 4 x USB 3.0, 2 x HDMI 1.4b, 2 x Gigabit Ethernet Ports, 2 x Mic Jacks, 1 x Audio Line-Out