The external sound card has its own audio chip, which can convert a port into multiple 3.5mm ports, which can be to 3.5mm audio devices such as earphs, earphs, speakers, microphs, etc., and supports single insertion and dual insertion. Dual-plug headset without adapter.$It is very suitable for replacing a faulty sound card, a damaged 3.5mm audio port or a damaged audio adapter. Using the 1.2m textile cord, you can put the sound card on the desktop and easily insert the device without bending over.$The traditional external sound card occupies interface, while the -280 expands interface to two. The two ports are compatible with common devices such as U disks, hard drives, mice, keyboards, notebook coolers, card readers, and fans. Quick , no delay.$Plug and play, no driver required. Compatible with all common systems, including XP, 7, 8, 8.1, 10 and Vista, IOS systems.$Convenient to carry, this small device weighing 100 grams can be easily placed in a pocket or handbag without any burden. The matte surface material brings you a wonderful touch, and the bright red/blue lights enhance the game atmosphere.