QNAP TS-251D-4G

2-Bay NAS, Intel Celeron Gemini Lake J4005 dual-core 2.0GHz (burst up to 2.7GHz), 4GB DDR4 SODIMM RAM (1x4GB, 2 DIMM slots, max 8GB total), SATA 6Gb/s, 1xGbE, PCIe 2.0 x4 slot for 5GbE or 2 more GbE, AES-NI encryption, 4K hardware transcoding, 4K HDMI v2.0, USB 3.0, virtualization, Surveillance Station (free 2, max 32 ch.), max 2 TR-004 expansion units