Your old printer, industrial controller, or legacy modem has a D25 port. Your cable is RJ45. You shouldn't need to re-crimp a whole run just to get a signal through. This adaptor takes a standard RJ45 connector — or an RJ12 with the adapter sleeve — and presents it as a D25 socket. Plug the cable in, connect the device, and stop fighting 25-year-old pinouts
| 0 | RJ45 |
| 1 | RJ12 (with adapter sleeve) |
| brand | Jaycar |
| connector_type | D25 plug to RJ45 socket |
| category | Cables & Connectors |
| sku | PA0904 |