QNAP TS-464 4-Bay High-Performance Desktop NAS. Intel 4C/4T Processor, burst up to 2.9GHz with 4GB DDR4 RAM, 2 x 2.5GbE, 2 x M.2 2280 PCIe Gen 3 x1, 1 x PCIe Gen3 x2 slot for network/storage expansion. Intel Celeron N5105/N5095 4-Core/4-Thread processor, burst up to 2.9GHz, 4GB DDR4 SODIMM RAM (1 x 4GB, 2 slots, max 16GB total), 4 x SATA 6Gb/s, 2 x 2.5GbE, 2 x M.2 2280 PCIe Gen 3 x1, 1 x PCIe Gen3 x2 slot for 10GbE/5GbE/1GbE or QM2 M.2 SATA/NVMe SSD adapter, 2 x USB 3.2 Gen 2 Type-A, 2 x USB 2.0, AES-NI encryption, hardware transcoding, 4K HDMI 2.0 60Hz, Virtualization, Surveillance with QVR Pro & Surveillance Station, expand with QNAP TL & TR expansion units