Pointing Devices and Keyboard

Enabling and Disabling the Internal Keypad

Press Fn+num lk to enable the embedded numeric keypad. The num lock light turns on. Press Fn+num lk again to return the keys to their standard keyboard functions.

The numeric keypad cannot be enabled while an optional external keyboard or keypad is connected to the notebook or to an optional Port Replicator.

Switching Key Functions on the Internal Keypad

You can temporarily switch the functions of keys on the internal keypad between their standard keyboard functions and their keypad functions by using the Fn key or the Fn+shift key combination.

To change the functions of a keypad key to keypad functions while the keypad is off, press and hold the Fn key while pressing the keypad key.

To use the keypad keys temporarily as standard keys while the keypad is on:

Press and hold the Fn key to type in lowercase.

Press and hold the Fn+shift to type in uppercase.

Using an External Keypad

Most keys on most external keypads function differently when num lock mode is on than when num lock mode is off. For example:

When num lock mode is on, most keyboard keys type numbers.

When num lock mode is off, most keypad keys function like arrow, page up, or page down keys.

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HP 309971-001 manual Using an External Keypad, Enabling and Disabling the Internal Keypad
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309971-001 specifications

The HP 309971-001 is a versatile and efficient power supply unit designed to meet the demanding requirements of various HP workstations and servers. As a fundamental component for reliable system performance, the 309971-001 delivers robust power while ensuring high energy efficiency, making it an excellent choice for professionals in need of dependable computing solutions.

One of the standout features of the HP 309971-001 is its impressive power output capacity, typically rated around 460 watts. This substantial power capacity enables it to support high-performance components, including powerful CPUs, advanced graphics cards, and extensive memory configurations. With the ability to accommodate these high-demand specifications, the 309971-001 is ideal for users engaged in graphic design, video editing, simulation modeling, and other resource-intensive applications.

The HP 309971-001 is designed using advanced technologies that guarantee maximum reliability and operational efficiency. It often incorporates Active Power Factor Correction (PFC), which improves energy efficiency by reducing the harmonic distortion in electrical currents. This not only leads to better performance but also contributes to lower operational costs in the long run.

In terms of physical characteristics, the HP 309971-001 features a compact and modular design that allows for easy installation and maintenance. Its built-in cooling mechanisms, including efficient fan configurations, operate silently to ensure a noise-free working environment, while managing the thermal output effectively during peak operational periods.

Compatibility is another critical aspect of the HP 309971-001. It is specifically designed to work seamlessly with a range of HP workstation models, enhancing its usability across multiple systems. This means that users can upgrade or replace existing power supplies without extensive modifications, providing a cost-effective solution when upgrading hardware or replacing faulty components.

Additionally, the unit often meets various safety and regulatory standards, ensuring that it operates within safe parameters while protecting both the system and the user. Features such as over-voltage protection, short-circuit protection, and overheating safeguards contribute to the longevity of connected components, ultimately enhancing the overall reliability of the system.

In conclusion, the HP 309971-001 power supply unit excels in performance, efficiency, and reliability. Its strong power output, advanced technology integration, and user-friendly design make it a valuable asset for professionals who demand high-quality computing solutions in their workstations and servers.
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