Best QNAP 24TB (Seagate Exos) TS-462-4G 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 for Business