Korean keyboards use the Hangul alphabet instead of the Roman alphabet. Most Korean keyboards can switch between Hangul and Roman input modes, with each key being double labeled for a Hangul character as well as a Roman letter. These keyboards can be used on a computer from any region, but may require you to install language support files or special drivers before they can be recognized by your Windows installation.
Please visit the links below to install or learn.
Korean Keyboard Typing Practice