Synology DiskStation DS220J 2-Bay 3.5" Diskless 1xGbE NAS (Tower) , Realtek RTD 1.4GHz, 512MB RAM DDR4, 2 x USB3.0, 2 Yr Warranty
Synology DiskStation DS218 2-Bay 3.5" Diskless 1xGbE NAS (Tower) (HMB), Realtek RTD1296 quad-core 1.4GHz, 2GB RAM, 2xUSB3, 1xUSB2, 1 x 1GbE (RJ-45)
Synology DiskStation DS120j 1-Bay 3.5" Diskless 1xGbE NAS (Tower) (SOHO), Marvell 800MHz, 2xUSB2 - 2 Years Warranty - Comes with 2 Camera Licenses.
Synology DiskStation DS1520+ 5-Bay 3.5" Diskless 4xGbE NAS (Tower),Intel Celeron J4125 4-core 2.0GHz,8GB RAM,2xUSB3,2x eSATA,3Yrs Wty. NO RAM Upgrade