The QNAP TS-251D is a 2-bay NAS with a quad-core 1.4GHz Realtek RTD1296 CPU and 2GB of DDR4 RAM. It has one Gigabit Ethernet port, two USB 3.2 Gen 1 ports, one USB 2.0 port, and one HDMI 2.0 port. It supports H.265/HEVC transcoding, Plex Media Server, QNAP’s HybridMount technology, QNAP’s Virtualization Station, and QNAP’s Container Station.