It is a USB driver on your computer. There are several ways to download it.

You can find the corresponding resources by directly searching for your mobile phone model on the search engine and adding the USB driver

You can download the universal mobile phone USB driver

By downloading some Mobile software tools. Such as "Wandoujia", etc.

If there is a memory card on the phone, add the memory card to the card reader to download

If the above methods cannot allow your phone to connect to the computer to download In terms of music. Then enjoy wireless WIFI directly through your computer and download music through the music player APP on your mobile phone (Tiantian Dongting, QQ Music, etc.).