The factory are specially producing S terminal and A&Vcomposite-Boards, GQ fiber socket, RCA pin jack, WP exterior connector outlet, USB plug, Connectors etc.

我厂主要生产S端子、音视频组合板、GQ光纤、RCA同芯插座、WP外接线插座、USB插头、连接器等系列。

youdao

So, it's out with the old 30-pin dock, but there's still optical, AUX, video out, RCA and 3.5mm jack connections if you prefer to keep things physically connected.

ENGADGET