The manual provides instructions for installing the required driver software and configuring the three programmable function keys on the Lenovo 2121 commercial keyboard. It covers supported operating systems, driver startup, and how to access the Lenovo function‑key icon in the Windows taskbar.
Detailed sections describe how to create and edit custom schemes, assign applications to each function key, use the soft‑power‑off key, and delete user‑defined schemes while protecting the default office and multimedia schemes. This manual is written in Chinese.