Side-by-side specifications of the Synology DS213 and DS423, from official datasheets. Differences are highlighted.
| DS213 | DS423 | |
| CPU | unknown | Realtek RTD1619B |
| Cores / threads | unknown | 4 cores / 4 threads |
| RAM (base) | unknown | 2 GB DDR4 non-ECC |
| RAM (max) | unknown | 2 GB |
| Drive bays | 2 | 4 |
| Expandable to | 0 | 0 |
| M.2 slots | 0 | 0 |
| Network | 1× Gigabit | 2 x 1GbE RJ-45 |
| 10GbE | no | no |
| Max raw capacity | 8 TB | null |
| Hot-swap | yes | yes |
| Form factor | tower | Desktop |
| Released | 2012 | 2023 |
| Power consumption | — | null |
| DSM at launch | — | 7.2 |