Side-by-side specifications of the Synology DS109j and DS110+, from official datasheets. Differences are highlighted.
| DS109j | DS110+ | |
| CPU | — | 1.06 GHz 64-bit |
| Cores / threads | — | — |
| RAM (base) | — | DDR |
| RAM (max) | — | — |
| Drive bays | 1 | 1 |
| Expandable to | 0 | 0 |
| M.2 slots | 0 | 0 |
| Network | 1× Gigabit Ethernet | 1x Gigabit Ethernet |
| 10GbE | no | no |
| Max raw capacity | — | — |
| Hot-swap | no | — |
| Form factor | Desktop | desktop |
| Released | 2009 | 2010 |
| Power consumption | 26 W / 10 W | 21 W / null |
| DSM at launch | 2.1 | 2.3 |
Choose the DS110+ if you want a much faster, more capable unit: it has a stronger CPU and far more RAM headroom, while the DS109J is the slower, entry-level model. Both are 1-bay NAS boxes, so neither offers bay expansion; neither has 10GbE or M.2 support.