Lenovo 4X31S04848 keyboard Mouse included Office RF Wireless + Bluetooth US English Black

The Lenovo 4X31S04848 is a full-size office keyboard with an included ambidextrous mouse, combining RF 2.4GHz and Bluetooth 5.3 connectivity for flexible, multi-device use. Built for professional environments, the set uses recycled materials and offers a low-profile, spill-resistant keyboard with a numeric keypad and a silent, precise mouse designed for everyday productivity.

Advantages

This keyboard and mouse set supports up to three connected devices (dual Bluetooth 5.3 and a 2.4GHz Lenovo Pro Unified USB receiver) and includes AES-128 encryption for secure wireless communication. The keyboard features quiet low-profile keys, one-touch media function keys (F1–F12), LED indicators for battery and device switching, adjustable tilt legs and spill resistance. The full-size ambidextrous mouse has silent buttons, a 4-way scroll wheel, three-level DPI up to 4000 and long battery life—up to 36 months depending on usage. Materials include 95% post-consumer recycled plastic with a portion reclaimed from Lenovo products.

Suitable for

• Office work and general productivity
• Multi-device setups (laptops, desktops, tablets) using Bluetooth or 2.4GHz receiver
• Users who prefer a silent typing and click experience

Key specifications

• Connectivity: Dual Bluetooth 5.3 + Lenovo Pro Unified 2.4GHz USB receiver
• Keyboard layout: Full-size (100%) with numeric keypad — Belgian layout
• Keyboard features: Low-profile silent keys, 3-zone design, one-touch media keys, LED indicators, adjustable tilt legs, spill-resistant
• Mouse: Full-size ambidextrous, 4 buttons (L/R, middle click, DPI), 4-way scroll wheel
• Mouse precision: Up to 4000 DPI, 3-level DPI setting
• Security: AES-128 encryption
• Materials: 95% post-consumer recycled plastic, including reclaimed Lenovo materials
• Battery life: Up to 36 months (keyboard and mouse, dependent on usage)
• Color: Black; Package: 2 pcs (keyboard + mouse)

How to use

Install the Lenovo Pro Unified USB receiver into an available USB port or pair the keyboard and mouse via Bluetooth 5.3 to compatible devices. Use the device-switch keys to toggle between up to three paired devices. Adjust keyboard tilt legs for a comfortable typing angle and use the one-touch function keys for media control. Change mouse DPI with the dedicated DPI button to match pointer speed to your task. Replace batteries when low-battery LED indicators illuminate.

Recommendations

For stable performance in office environments, keep the 2.4GHz receiver unobstructed and within recommended range of the devices; for multi-device workflows, pair frequently used devices via Bluetooth and reserve the USB receiver for the primary workstation.