Lindy 42926 Audio Converter Silver, White

This USB Type-A Audio Converter is a useful accessory for connecting 3.5mm audio peripherals such as headphones and microphones to a USB Type-A port on an ultrabook, notebook, or tablet. With the ever-increasing production of ultra-thin devices, the number of external ports is becoming increasingly limited. This converter solves this limitation by providing two 3.5mm audio jack ports using a common USB Type-A port. One port allows you to connect headphones or speakers, while the other is used for connecting a mono microphone input, ideal for conferences or audio recording.

Its small size also makes it a complementary accessory to the minimalist designs of some devices as well as being easily transportable in cases or travel bags.
The plug & play installation allows you to use it directly by simply plugging it in.