Mini-TOSLINK (also called mini optical) is the 3.5mm form factor TOSLINK connector that fits in a standard headphone jack-sized hole. Used on MacBook and some laptops to combine analog and optical audio in one port.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | Optical TX | Digital audio optical transmit | BUS |
| 2 | Coupling | 3.5mm housing body | I/O |