Lenovo 4X90S91830

Overview

The Lenovo 4X90S91830 is a USB 3.0 to Ethernet adapter designed to provide a fast and dependable wired network connection for your laptop or desktop. It supports data transfer speeds up to 1 Gbps, making it well-suited for activities like transferring large files, streaming high-quality video, or performing system imaging where a stable and quick connection is essential. This external adapter connects through a SuperSpeed USB 3.0 port, allowing you to add Ethernet capability to devices without a built-in port or when Wi-Fi is unreliable. Its lightweight and portable design fits naturally into the workflow of professionals who need consistent network access on the go.

Key features

• Supports data transfer speeds up to 1 Gbps for fast and reliable wired connections
• Connects via SuperSpeed USB 3.0 for easy plug-and-play setup without additional drivers
• Compatible with Gigabit Ethernet (1000Base-T), Fast Ethernet (100Base-TX), and standard Ethernet (10Base-T) protocols
• External and lightweight design makes it easy to carry and use in various locations
• Works with multiple types of Ethernet cabling to adapt to different network infrastructures
• Classic black color blends seamlessly with most laptops and desktops

Key specs

• Interface: USB 3.0 SuperSpeed
• Maximum data transfer speed: 1 Gbps
• Supported Ethernet standards: 1000Base-T, 100Base-TX, 10Base-T
• Color: Black
• Form factor: External adapter

Connectivity and compatibility

This adapter is designed to work with any laptop or desktop that has a USB 3.0 port, providing a reliable wired network connection where Wi-Fi may be unstable or unavailable. It supports a wide range of Ethernet standards, ensuring compatibility with most modern and legacy network setups. Whether you are connecting in an office environment, at home, or on the road, it offers a straightforward way to access wired networks without internal hardware upgrades.

Ideal uses and environments

The Lenovo USB 3.0 Ethernet adapter is a strong choice for professionals who travel frequently or work remotely and require a stable internet connection. It fits well in home offices, corporate settings, and any location where Wi-Fi signals are weak or congested. This adapter is also useful for IT technicians and system administrators who need quick access to wired networks for tasks like system imaging or large file transfers.

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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