QNAP TS-453D-4G

4-Bay NAS, Intel Celeron Gemini Lake J4125 quad-core 2.0GHz (up to 2.7GHz), 4GB DDR4 SODIMM RAM (1 x 4GB, 2 slots, max 8GB total), SATA 6Gb/s, 2 x 2.5GbE, 1 x PCIe Gen2 x2 slot for 10GbE/5GbE/1GbE or QM2 M.2 SATA/NVMe SSD adapter, AES-NI encryption, hardware transcoding, 4K HDMI 2.0 60Hz, 5 x USB ports, Virtualization, Surveillance with QVR Pro & Surveillance Station, expand with QNAP TL & TR expansion units