Follow the steps below to resolve this issue:

• Check if the Micro USB Cable is connected to your computer.

  If not, connect the Micro USB Cable to your scanner and your computer.

  
  

• Check if SD is displayed on scanner's display (hereinafter called LCD).

  If PC is displayed on the LCD instead of SD, your scanner is in TWAIN mode.

  Press Start / OK, and then display SD on the LCD to change to Mass Storage mode (SD mode).

  
  

• Check if the Wi-Fi® switch is set to OFF.

  If not, slide the Wi-Fi® switch to OFF.

  
  

• Check if a document is being scanned from your scanner.

  If so, wait until the scanning is finished. The SD card's folder will be displayed on your computer screen when scanning is finished.