An official website of the United States government

Dot gov

Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS

A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. .

The error can also manifest as a "Failed to open port" message or the software simply getting stuck during a read or write process.

Quickly catch and select the or Preloader entry in the list.

Locate the dropdown and drop it down from 16 to 1 .

USB 3.0 ports can work but are more prone to instability because they use different signaling and have additional power management. Stick to USB 2.0 whenever possible.