EASY TO USE: Headset adapter cable from dual USB ports to RJ9 socket. The RJ9 socket connects to the headphones, and the USB socket connects to the computer. Comes with a microphone control box: LCD digital cycle timer switch to mute the microphone, adjust the volume, and mute the speaker with one touch. Working status indicator: LCD digital cycle timer programmer switch green standby indicator is always on, the green call indicator flashes, and the sound is muted and flashes red. Unique design: LCD digital cycle timer switch. Lightweight, elegant, and compact design that maximizes convenience and ease of use. Flexible and practical: short 158 cm cable, modular clock, LCD digital timer for easy movement of the adapter, while effectively protecting the computer's USB interface.