USB multi-function external sound card tuner, with built-in sound output function! It is an expander and a speaker.USB2.0 high-speed transmission, USB2.0 high-speed transmission, the theoretical rate can reach 480Mbps, and the file can be read quickly. Support listening + speaking two-in-one function, connect 3.5mm audio port to make music more immersive.The notebook is connected to headphones/microphones, which can be used by connecting headphones alone, or using microphones to sing/live at the same time. The computer interface extension function extends the USB interface to the desktop and is convenient for work. 3 USB ports can be connected to devices such as mouse, keyboard, U disk, hard disk, card reader, printer, radiator, game controller, etc. With volume adjustment function, the sound level can be controlled with one hand. The alloy shell is , not afraid of daily wear and tear, can quickly export heat and refuse to get hot, and the operation is smoother. Flexible PVC outer cover, anti-winding and not easy to knot, wear- and pull-, longer service life. Plug and unplug: plug and play Interface: USB2.0x3+headphone port+headphone port+microphone port+volume adjustment+sound external speaker Support: disk/keyboard/mouse/headphone/headset/microphone/speaker, etc. The color of the microphone interface is random,don't accept the specified color; the appearance from batch to batch, but it does not affect the use; the actual product may have color difference due to different light or display Colour:Black Material:Aluminum Alloy Package Contents: 1 x USB External Sound Card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.