Side-by-side specifications of the Synology DS108J and DS109+, from official datasheets. Differences are highlighted.
| DS108J | DS109+ | |
| CPU | Marvell 88F5182 | — |
| Cores / threads | 1/1 | — |
| RAM (base) | 32 MB | — |
| RAM (max) | 32 MB | — |
| Drive bays | 1 | 1 |
| Expandable to | 0 | — |
| M.2 slots | 0 | 0 |
| Network | 1x Gigabit | 1GbE x1 |
| 10GbE | no | no |
| Max raw capacity | 1 TB | — |
| Hot-swap | no | no |
| Form factor | desktop | desktop |
| Released | 2008 | 2009 |