Side-by-side specifications of the Synology DS213 and DS509+, from official datasheets. Differences are highlighted.
| DS213 | DS509+ | |
| CPU | unknown | — |
| Cores / threads | unknown | — |
| RAM (base) | unknown | — |
| RAM (max) | unknown | — |
| Drive bays | 2 | 5 |
| Expandable to | 0 | 5 |
| M.2 slots | 0 | 0 |
| Network | 1× Gigabit | 2x Gigabit |
| 10GbE | no | no |
| Max raw capacity | 8 TB | 10 hard drives |
| Hot-swap | yes | yes |
| Form factor | tower | desktop |
| Released | 2012 | 2009 |
| Power consumption | — | 30 W–69 W |
| DSM at launch | — | 2.1 |