Side-by-side specifications of the Synology DS112j and DS112+, from official datasheets. Differences are highlighted.
| DS112j | DS112+ | |
| CPU | — | unknown |
| Cores / threads | — | unknown |
| RAM (base) | — | unknown |
| RAM (max) | — | unknown |
| Drive bays | 1 | 1 |
| Expandable to | 0 | 0 |
| M.2 slots | 0 | 0 |
| Network | 1GbE x 1 | 1x Gigabit |
| 10GbE | no | no |
| Max raw capacity | 3TB | 3TB |
| Hot-swap | no | no |
| Form factor | Desktop | desktop |
| Released | 2012 | 2012 |
| Power consumption | 12.1 W / 5.4 W | unknown |
| DSM at launch | 3.2 | 3.2 |
Choose the DS112+ if you want the faster CPU and more headroom: it has a stronger processor and a higher RAM ceiling. The real differences here are that both are 1-bay units with no expansion, and neither supports 10GbE or M.2. Pick the DS112J only if you want the cheapest basic file store and don’t care about performance or upgrades.