Lenovo 4X90F84315 ThinkPad Ethernet Extension Cable

Overview

The Lenovo 4X90F84315 is an Ethernet extension cable designed to provide a reliable wired network connection for ThinkPad laptops that lack a built-in RJ-45 port. It converts the microUSB port on compatible ThinkPad models into a standard Ethernet jack, supporting data transfer speeds up to 5 Gbps. This cable is ideal for users who require stable, low-latency connections for tasks such as remote management, image deployment, and secure communications.

Key features

• Converts microUSB to RJ-45 Ethernet, enabling wired network access on select ThinkPad laptops without native Ethernet ports
• Supports high-speed data transfer rates up to 5 Gbps for smooth and consistent network performance
• Compatible with PXE boot and Intel vPro technologies, facilitating enterprise-level remote management and hardware diagnostics
• Driver-free plug-and-play setup allows instant use without additional software installation
• Compact 80 mm cable length keeps your workspace organized while providing enough reach for comfortable connections
• Works seamlessly with popular ThinkPad models including X1 Carbon, L380, and Yoga series, making it a versatile accessory for mobile professionals

Key specs

• Data transfer rate: up to 5 Gbps
• Cable length: 80 mm
• Connector type: microUSB to RJ-45 Ethernet
• Compatibility: select Lenovo ThinkPad models (X1 Carbon, L380, Yoga series)
• Enterprise features: PXE boot support, Intel vPro compatibility
• Driver requirement: none (plug-and-play)

Connectivity and compatibility

This extension cable bridges the gap between modern ultrabooks and traditional wired networks by converting a microUSB port into a full Ethernet interface. It supports essential enterprise protocols like PXE boot for network-based system startup and Intel vPro for remote management, making it suitable for IT environments that require secure and manageable connections. The cable fits neatly into setups where space is limited, and its compatibility with key ThinkPad models ensures broad usability across Lenovo’s laptop lineup.

Ideal uses and environments

The Lenovo 4X90F84315 is well suited for IT professionals who manage large fleets of laptops, consultants who travel frequently between client sites, and business travelers who need dependable wired connections in hotels or conference centers. It provides a stable alternative to wireless networks, reducing latency and improving security for sensitive tasks. This cable is a practical choice for anyone who values consistent network performance without the bulk of docking stations or adapters.