NAS QNAP 262 2-Bay, CPU Intel Celeron N4505 2-core 2-thread processor (burst up to 2.9 GHz), RAM 4 GB DDR4 (onboard not expandable), HDD 2 x 2.5 3.5 SATA 6Gbps + 2 x M.2 2280 PCIe Gen 3 x1 SSD slo