Side-by-side specifications of the Synology DS213 and DS409slim, from official datasheets. Differences are highlighted.
| DS213 | DS409slim | |
| CPU | unknown | 1.2GHz |
| Cores / threads | unknown | — |
| RAM (base) | unknown | 128MB DDR800 |
| RAM (max) | unknown | — |
| Drive bays | 2 | 4 |
| Expandable to | 0 | 0 |
| M.2 slots | 0 | 0 |
| Network | 1× Gigabit | 1x Gigabit Ethernet |
| 10GbE | no | no |
| Max raw capacity | 8 TB | 3TB |
| Hot-swap | yes | yes |
| Form factor | tower | Desktop, 2.5-inch |
| Released | 2012 | 2010 |
| Power consumption | — | 19 W / 12 W |
| DSM at launch | — | 2.3 |