NAS QNAP 453E 4-Bay, CPU Intel® Celeron® J6412 4-core/4-thread processor, burst up to 2.6 GHz, RAM 8 GB DDR4 onboard not expandable, HDD 2.5″ & 3.5″ SATA 6Gb/s, 3Gb/s (neincluse), LAN: 2 x 2.5GbE, USB3.2 Gen2: 2 USB2.0: 2, tower, adaptor al