2.5mm Audio Jacks. One of the popular and most common types of motherboard audio ports is the 2.5mm jack. We use them to connect headphones as speakers. These ports accept the widely popular 2.5mm Audio Connector.

Featuring compact packages sizes and profiles as low as 2.9 mm, SZGOZIE’ 2.5 mm audio jacks offer panel mount, surface mount, and through hole mounting styles in vertical or horizontal orientations. These 2.5 mm stereo and mono jacks further carry 2 to 6 conductors, up to 2 internal switches, 12 or 16 Vdc voltage ratings, and 0.3 or 1 A current ratings.

2.5mm plugs are noticeably smaller than a standard headphone plug. 2.5mm is used on many home phones that have a headset jack, some office phones, and the Xbox 360 controller headset jack.