The provided information highlights key features of a keyboard. Let's break down the key points:

1. Robust Built Quality & Quiet Keys:

   Emphasizes the keyboard's sturdy construction, indicating durability. The mention of quiet keys suggests a typing experience that minimizes noise.

2. Hot Keys & Easy to Connect USB:

   The keyboard features hot keys, providing quick access to certain functions. It's also easy to connect via USB, ensuring a convenient setup.

3. Ergonomically Designed:

   The keyboard is designed with ergonomics in mind, aiming to provide users with a comfortable and efficient typing experience.

4. Operating Voltage: 4.40 ~ 5.25 VDC:

   Specifies the operating voltage range for the keyboard, indicating the power requirements for proper functioning.

5. Switch Life: 20 Million Keystrokes:

   Indicates the switch life of the keyboard, suggesting that it can endure up to 20 million keystrokes, highlighting its durability.

6. Compatibility: Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Available USB Port:

   The keyboard is compatible with various Windows operating systems (Vista, 7, 8, 8.1, 10) and requires an available USB port for connectivity.

7. 104 Normal Keys and 4 Hot Keys:

   Specifies the total number of keys on the keyboard, including both normal keys and hot keys. This provides a standard full-size layout with additional hot keys for quick access.

In summary, this keyboard is designed with durability, quiet operation, ergonomic considerations, and compatibility in mind. The inclusion of hot keys enhances functionality, and the specified switch life suggests a long-lasting product.