Side-by-side specifications of the Synology DS212 and DS212j, from official datasheets. Differences are highlighted.
| DS212 | DS212j | |
| CPU | 1.6GHz | — |
| Cores / threads | — | — |
| RAM (base) | 256MB | — |
| RAM (max) | — | — |
| Drive bays | 2 | 2 |
| Expandable to | 0 | 0 |
| M.2 slots | 0 | 0 |
| Network | 1x Gigabit | 1× Gigabit |
| 10GbE | no | no |
| Max raw capacity | 6TB | 6 TB |
| Hot-swap | yes | no |
| Form factor | Desktop | desktop |
| Released | 2011 | 2011 |
| Power consumption | 18.2 W / 6.8 W | 17.6 W / null |
| DSM at launch | — | — |