QNAP TS-464U-RP-8G,1U 4-Bay rackmount NAS, Intel® Celeron® N5105/N5095 quad-core, 8GB RAM onboard (not expandable), 4 x 3.5"/2.5" SATA 6Gb/s drive bays, 1 x PCIe Gen3 x2 slot, 2 x 2.5GbE, 1 x HDMI 1.4b, 2 x USB 3.2 Gen2 Type-A+ 2 x USB 2.0, 2 x 250W redundant PSU