Especificaciones de los Synology DS109j y DS109+ en paralelo, de las fichas técnicas oficiales. Las diferencias están resaltadas.
| DS109j | DS109+ | |
| CPU | — | — |
| Núcleos / hilos | — | — |
| RAM (base) | — | — |
| RAM (máx.) | — | — |
| Bahías | 1 | 1 |
| Ampliable a | 0 | 0 |
| Ranuras M.2 | 0 | 0 |
| Red | 1× Gigabit Ethernet | 1GbE |
| 10GbE | no | no |
| Capacidad bruta máx. | — | — |
| Intercambio en caliente | no | no |
| Formato | Desktop | desktop |
| Lanzamiento | 2009 | 2009 |
| Consumo | 26 W / 10 W | 21 W / 12 W |
| DSM de lanzamiento | 2.1 | 2.1 |
Pick the DS109+ if you want the faster CPU and the higher RAM ceiling; it is the better choice for heavier file sharing, more users, and generally smoother NAS performance. Both are 1-bay units with no expansion, no 10GbE, and no M.2, so the real deciding factor is performance and memory rather than upgradeability.