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Lenovo 4X91K16970 Thunderbolt 4 Workstation Dock Split Cable
Lenovo 4X91K16970 Thunderbolt 4 Workstation Dock Split Cable
Lenovo 4X91K16970 Thunderbolt 4 Workstation Dock Split Cable
Lenovo 4X91K16970 Thunderbolt 4 Workstation Dock Split Cable
Lenovo

Lenovo 4X91K16970 Thunderbolt 4 Workstation Dock Split Cable

★★★★★4.5 (38 reviews)
Thunderbolt 4

Simplify your Lenovo ThinkPad dock setup with this Thunderbolt 4 split cable delivering 40 Gbps data and up to 230W power.

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Overview

The Lenovo 4X91K16970 Thunderbolt 4 Workstation Dock Split Cable addresses a specific challenge faced by users of power-hungry mobile workstations: the 100W ceiling of standard USB-C Power Delivery. By splitting the connection into a Thunderbolt 4 data path and a separate DC power input, this 0.7-meter cable allows ThinkPad Thunderbolt 4 Workstation Docks to deliver up to 170W or 230W to the laptop while maintaining a full 40 Gbps data link. The result is a single-cable docking experience even for workstations that would otherwise require a dedicated AC adapter alongside the dock.

Build quality follows Lenovo's enterprise accessory standards, with Thunderbolt 4 (Male) to Thunderbolt 4 Type-C (Male) connectors engineered for repeated daily docking cycles. The compact 0.7-meter length keeps cable management tidy on a desk but does require the dock to be positioned close to the laptop. Because this is a proprietary split-cable design, it is not interchangeable with standard Thunderbolt 4 cables or docks from other manufacturers — it is purpose-built for the Lenovo ThinkPad Thunderbolt 4 Workstation Dock ecosystem.

Key Features

For exceptional quality, upright compatibility and reliability use this data transfer/power cable

Features Thunderbolt 4 cable type for your convenience and desired usability

Fast Charging feature for better usability and increased efficiency

Fully compatible with workstations

Specifications

Brand
Lenovo
Model
4X91K16970
Cable Type
Thunderbolt 4 Split Cable
Length
0.7 m (2'4")
Data Transfer Rate
40 Gbps
Power Delivery
Up to 100W (USB-C) / 170W–230W (DC plug)
Connector
Thunderbolt 4 (Male) to Thunderbolt 4 Type-C (Male)
Compatibility
ThinkPad Thunderbolt 4 Workstation Docks
Fast Charging
Yes

Frequently Asked Questions

This cable is designed specifically for Lenovo ThinkPad Thunderbolt 4 Workstation Docks. It is not intended for use with other Thunderbolt docks or general-purpose Thunderbolt connections.
The cable measures 0.7 meters (approximately 2 feet 4 inches), which is suited for close-proximity desk setups where the dock sits near the workstation.
It supports up to 100W charging via the USB-C connection or 170W/230W via the DC plug, allowing it to power demanding workstation-class laptops that require more than standard USB-C power delivery.
The cable splits power and data into separate pathways, combining a Thunderbolt 4 data connection with a DC power input so that high-wattage workstations can receive both full-speed data and sufficient power through a single docking solution.
The cable supports Thunderbolt 4 speeds of up to 40 Gbps, matching the full bandwidth capability of the Thunderbolt 4 protocol.

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