Lenovo 4X31N50708

Overview

The Lenovo 4X31N50708 is a wireless keyboard and mouse combo designed to provide a reliable and clutter-free desktop experience. It connects via a 2.4 GHz USB receiver, allowing seamless use with laptops or desktops in various environments such as offices, classrooms, or living rooms. The keyboard features a full-size layout with a number pad and quiet key switches, while the mouse offers smooth tracking with a 1600 DPI optical sensor, making this combo well suited for everyday productivity tasks.

Key features

• Wireless connection through a single 2.4 GHz USB receiver for easy plug-and-play setup
• Full-size keyboard with a 2.5-zone layout that includes a number pad and one-touch media keys for quick volume and playback control
• Quiet key switches designed to minimize noise during typing, rated for up to 10 million key presses
• Spill-resistant keyboard deck with adjustable tilt feet to customize typing angle and comfort
• Ambidextrous mouse with a 1600 DPI optical sensor that tracks smoothly on most desk surfaces
• Durable mouse switches rated for approximately 3 million clicks to ensure long-lasting use
• Long battery life with up to 15 months for the keyboard and 18 months for the mouse, powered by AAA and AA batteries respectively
• Environmentally conscious design using 65 percent post-consumer recycled plastic in the housing
• Three-year limited warranty providing added confidence for business or home use

Key specs

• Wireless technology: 2.4 GHz USB receiver
• Keyboard layout: Full-size with number pad and 2.5-zone key arrangement
• Key switch durability: Rated for 10 million presses
• Mouse sensor: Optical, 1600 DPI
• Mouse switch durability: Rated for 3 million clicks
• Keyboard battery: Two AAA batteries, up to 15 months life
• Mouse battery: One AA battery, up to 18 months life
• Material: 65% post-consumer recycled plastic housing
• Warranty: Three-year limited

Connectivity and compatibility

This combo uses a single USB receiver operating at 2.4 GHz, which simplifies wireless connectivity without the need for Bluetooth pairing. It works with any device that supports USB input, making it a flexible choice for a wide range of laptops and desktops. The reliable wireless link ensures minimal interference and stable performance across typical office or home environments.

Durability and sustainability

Built to withstand heavy daily use, the keyboard and mouse are rated for millions of key presses and clicks, ensuring they remain responsive over time. The spill-resistant keyboard deck adds protection against accidental liquid exposure, reducing downtime. Additionally, Lenovo’s use of recycled plastic in the housing reflects a commitment to sustainability without compromising build quality.

Ideal uses and environments

This wireless combo fits well in settings where a clean, cable-free workspace is preferred, such as home offices, classrooms, or shared workstations. Its quiet keys and long battery life make it suitable for users who type extensively or work in noise-sensitive environments. The ambidextrous mouse design accommodates both right- and left-handed users, broadening its appeal for diverse workgroups.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

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We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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