Lenovo ThinkPad Gen2 Ethernet Extension Adapter

The Lenovo 4X90Q84427 is an Ethernet extension adapter designed for ThinkPad laptops that do not include a built-in network jack. By attaching to the dedicated side port on select systems, it immediately supplies a standard RJ-45 connector, giving you the speed and stability of a wired link without any driver installation.

The short 3.1-inch cable keeps clutter off the desk and slips into a pocket or sleeve so it is always on hand. Whether you are working in a hotel room, a conference hall, or an office with strict security rules, you can count on this adapter when wireless signals are weak or prohibited. It draws power directly from the laptop, so there is no extra power brick to carry.

For everyday tasks such as transferring large files, streaming presentations, or running video calls, the wired connection helps maintain smooth performance and reduces dropouts. It is equally useful for remote workers who move between locations and need a quick way to plug in wherever an Ethernet wall jack is available.

IT administrators will benefit from its support for PXE boot and remote management. These functions enable network-based imaging, troubleshooting, and control, making the adapter a practical tool for deploying and maintaining a fleet of ThinkPad systems.

Highlights:

• Full-size RJ-45 port delivers reliable wired Ethernet connectivity
• Plug-and-play operation on select ThinkPad laptops with no drivers required
• Supports PXE boot and remote management for efficient IT workflows
• Cable measures only 3.1 inches, reducing clutter inside a bag or on a desk
• Lightweight design that is easy to pack and carry