To format a USB drive (优盘) you can follow these steps。1.Connect the USB drive to your computer。2.Open Disk Management on Windows or Disk Utility on Mac。3.Locate the USB drive in the list of drives。4.Right-click on the USB drive and select "Format" or "Erase"。5.Choose the file system you want to use (such as FAT32.exFAT.or NTFS)。