Lenovo 4X90Q84427

Overview

The Lenovo 4X90Q84427 is an Ethernet extension adapter designed to provide wired network connectivity for ThinkPad laptops that lack a built-in Ethernet port. It connects via a dedicated side port on compatible models, instantly offering a standard RJ-45 jack for stable and fast wired internet access without the need for driver installation. Its compact 3.1-inch cable keeps your workspace tidy and fits easily into a pocket or laptop sleeve, making it convenient for travel and on-the-go use.

Key features

• Full-size RJ-45 port delivers consistent and reliable wired Ethernet connectivity, ideal for environments where wireless signals are weak or restricted.
• Plug-and-play design ensures quick setup with no drivers required on supported ThinkPad laptops, saving time and avoiding compatibility issues.
• Supports PXE boot and remote management, enabling IT administrators to perform network-based imaging, troubleshooting, and system control efficiently.
• Short 3.1-inch cable reduces desk clutter and fits neatly into bags or pockets, enhancing portability without sacrificing functionality.
• Powered directly from the laptop, eliminating the need for an external power source or additional adapters.

Key specs

• Connector type: Full-size RJ-45 Ethernet port
• Cable length: 3.1 inches (approximately 8 cm)
• Compatibility: Select Lenovo ThinkPad laptops with dedicated side port
• Power: Draws power from the laptop, no external power required
• Network features: Supports PXE boot and remote management protocols

Connectivity and compatibility

This adapter is specifically designed for Lenovo ThinkPad laptops that include a dedicated side port for Ethernet extension. It provides a standard RJ-45 connector compatible with most wired networks, making it suitable for office environments, conference rooms, and secure locations where wireless connections are limited or disabled. Its plug-and-play nature means it works seamlessly without additional software on supported models.

Ideal uses and environments

The Ethernet extension adapter is well suited for professionals who frequently work in locations with unreliable Wi-Fi or strict network security policies. It supports smooth streaming, large file transfers, and stable video calls, making it a practical choice for remote workers, business travelers, and IT administrators managing ThinkPad fleets. Its compact size and lightweight design also make it easy to carry between home, office, and client sites.

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, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, 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; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

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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