Lenovo USB-C Mini Dock (40AU) Refurbished (Grade A/B)
Description
The Lenovo USB-C Mini Dock (part number 40AU) in refurbished Grade A/B condition is a professional-grade interface expansion solution, highly sought after by businesses, freelancers, and maintenance technicians to optimise mobile workstations. By transforming a single USB-C port on a laptop (Lenovo ThinkPad, MacBook, or compatible PC) into a complete workstation, this product meets a critical connectivity need while supporting an eco-responsible circular economy approach. This model is supplied bare, without its original box and without a mains power adapter.
In terms of electronic architecture, this compact station concentrates industrial-grade network, audio, and video controllers within a rigid, high-heat-dissipation ABS casing. It features an HDMI 2.0 port supporting ultra-high-definition resolutions up to 4K at 60Hz, coupled with a legacy analog VGA interface (1080p) to ensure compatibility with older projectors or monitors. The network section is managed by a Gigabit Ethernet RJ45 port supporting advanced enterprise features such as PXE Boot and MAC address pass-through on compatible ThinkPad machines. For peripherals, the dock segments bandwidth between a high-speed USB 3.1 Gen 1 (5 Gbps) port and a USB 2.0 port dedicated to input devices (mouse, keyboard) to limit signal interference.
The station's power management uses the Power Delivery (PD 3.0) protocol via its dedicated female USB-C port. The internal circuit board is equipped with surge and back-feed protection, ensuring secure pass-through power routing. When the dock is connected to an external USB-C charger (not supplied), it is capable of powering itself while redistributing up to 45W of continuous power to the host laptop to maintain battery charge under intensive working conditions.
Technical Specifications
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Manufacturer Part Number: 40AU / LENOVO USB-C Mini Dock
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Technology / Material: High-density ABS polymer chassis and integrated shielded USB-C host cable (~19 cm)
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Compatibility: Universal (Windows 10/11, macOS, Linux) on devices equipped with a full-featured USB-C port (DisplayPort Alternate Mode & Power Delivery)
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Dimensions: 180 x 53 x 17 mm
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Weight: 156 g
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Power / Standards: Female USB-C input compatible with Power Delivery 3.0 (requires a 45W to 65W charger, not included, for host charging)
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Video Connectivity: 1 x HDMI 2.0 (4K @ 60Hz max) / 1 x Workshop VGA (1920x1080 @ 60Hz max)
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Data and Network Connectivity: 1 x USB 3.1 Gen 1 (5 Gbps), 1 x USB 2.0, 1 x USB-C (data), 1 x Gigabit RJ45 (10/100/1000 Mbps)
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Audio Output: 1 x 3.5 mm Combo Jack (Headset / Microphone)
Workshop Advice & Usage
As professionals, please note that this 40AU mini dock is supplied without a mains charger. For absolute system stability in the workshop or at your client's site, do not connect this dock to a simple slow-charging USB port. It is imperative to use a Power Delivery type USB-C mains power adapter with a minimum power of 45W (65W being optimal) connected directly to the dock's female USB-C charging port. Also, remind your users that the HDMI link and the VGA link cannot be used to extend the display onto two separate monitors with different images (the internal controller restricts simultaneous dual display to clone/mirror mode only).
