QNAP NAS - 4-Bay desktop NAS, Intel® Celeron® N4505 dual-core, 4 GB DDR4 onboard not expandable, 4 x 3.5"/2.5" SATA 6Gb/s drive bays, 2 x M.2 2280 PCIe Gen 3 x1 slots, 1 x 2.5GbE, 1 x PCIe Gen3 x2 slot, 1 x HDMI 2.0, 2 x USB 3.2 Gen 2 Type-A + 2 x USB 2.0