A compact jack that has the same form factor as a mini jack (3.5mm/1/8″), and that may be used for either stereo or balanced analog or optical (TOSLink-format) connections. Mini-TOSLink jacks have a longer tip featuring a fiber-optic LED at the end (bottom) of the jack. Because of the longer tip, an analog 1/8″ TRS plug will not contact the LED.
Mini-TOSLink connectors may be used for either input or output. Headphone/optical out, stereo line/optical out or in, and microphone/optical in are common types used on laptop computers.