DS418j

4-bay DiskStation, Dual Core 1.4 GHz, 1GB RAM
•  CPU: Realtek RTD1293 Dual Core 1.4 GHz
•  Memory: 1 GB DDR4
•  Internal HDD/SSD:  3.5" SATA HDD or 2.5" SATA HDD,  or 2.5" SATA SSD
•  Max Internal Capacity: 48 TB (12 TB drive x 4) 
•  External Ports: USB 3.0 x 2
•  LAN: RJ-45 1GbE LAN Port x 1
•  Maximum IP cam: 25