Docking station Lenovo ThinkPad USB 4 Smart Dock 5500 with 135W AC adapter (40BC0135EUN)

The Lenovo ThinkPad USB 4 Smart Dock 5500 is a USB-C/USB4-compatible docking station engineered to expand connectivity for laptops and compatible devices. Supplied with a 135W AC adapter, the dock provides power delivery while enabling multiple external displays, wired network access and a range of peripheral connections. It is intended for office and hybrid work environments where a single connection point simplifies workstation setup and supports fast data transfer and reliable power to connected systems.

Advantages

The docking station combines USB4 compatibility with a high-capacity 135W power adapter to deliver both fast data throughput and laptop charging through a single cable. Multiple video outputs and onboard Ethernet reduce the need for separate adapters, and a variety of USB ports and audio connections let users attach keyboards, mice, storage devices and headsets without frequent cable changes. The compact design centralizes connections at the desk while maintaining compliance with modern USB-C standards.

Suitable for

• Office and home office workstations that require a single-cable connection for power, displays and peripherals
• Hybrid workers who frequently connect and disconnect a laptop to a stationary setup
• Users needing multiple external monitors and a reliable wired Ethernet connection
• Environments where centralized port access (USB, audio, network) simplifies device management

When it may not be suitable

The dock is designed for systems with USB-C/USB4 or compatible USB-C ports that support data and power delivery; laptops with older USB standards or proprietary docking connectors may not be fully supported. Systems that require specialized legacy ports not present on the dock will need additional adapters. Also, if you need extreme GPU-dependent performance for high-end gaming beyond typical productivity or content-creation workflows, dedicated external GPU solutions may be more appropriate.

Key specifications

• Interface compatibility: USB-C / USB4 compatible host connection
• Power delivery: 135W AC adapter for laptop charging and dock operation
• Video support: multiple external display outputs (supports connecting multiple monitors depending on host capabilities)
• Network: integrated wired Ethernet port for stable LAN connectivity
• USB connectivity: a mix of USB-A and USB-C ports for peripherals and storage devices
• Audio: headset/headphone support via dedicated audio jack(s)
• Form factor: compact desktop docking unit for workstation use

How to use

Connect the included 135W AC adapter to a power outlet and attach it to the dock. Use the primary USB-C/USB4 host cable to connect the dock to a compatible laptop or device; once connected, the dock provides power delivery and enumerates attached peripherals. Attach external monitors to the dock’s video outputs and connect Ethernet, USB devices and audio accessories as needed. Follow the host operating system prompts to install any required drivers or firmware updates to enable full functionality.

What to consider before purchase

• Verify that your laptop’s USB-C port supports data transfer and power delivery (USB4 or compatible alternate modes) to use all dock features
• Check the number and type of video outputs required and confirm host graphics support for multiple external displays
• Ensure the 135W power delivery is sufficient for your laptop model and its power profile under load
• Confirm the dock’s available USB and audio ports match your peripheral needs to avoid additional adapters

Usage recommendations

For consistent performance, connect the dock to a grounded AC outlet and keep host system firmware and drivers up to date. When using multiple high-resolution displays, verify host graphics settings and cable specifications to achieve desired refresh rates and resolutions.