Lenovo ThinkPad Mini Dock Series 3 4337 USB 3.0 Dock No Adapter

Lenovo ThinkPad Mini Dock Series 3 — Single-Cable Desk Expansion

The ThinkPad Mini Dock Series 3 (Type 4337) turns any compatible ThinkPad into a full desktop workstation with one connection — USB 3.0, dual display, Gigabit Ethernet, and audio all live the moment you dock. Backed by a full 12-month warranty from Reboot IT (Melbourne, est. 2001). Note: power adapter not included.

Key Benefits

• USB 3.0 SuperSpeed: 5Gbps throughput — transfer a 50GB project from an external SSD in under 3 minutes versus 20+ on USB 2.0.
• Dual Display Support: DVI-D and VGA ports let you run two external monitors simultaneously for expanded screen real estate.
• One-Click Docking: Single proprietary connector attaches all peripherals at once — no plugging in individual cables each morning.
• Gigabit Ethernet: Stable wired 1Gbps network — more reliable than Wi-Fi for video calls, VPN, and large file transfers.
• Always-On USB: One USB port stays powered when the laptop is undocked, keeping devices charged continuously.
• Compact Footprint: Low-profile housing keeps desk space clear while providing a stable base for your ThinkPad.

Performance in Use

Arrive at your desk, drop your ThinkPad onto the dock, and everything connects — dual monitors, keyboard, mouse, Ethernet, and USB storage, all instantly. Undock at the end of the day and you take only the laptop. No cables pulled individually.

For IT teams standardising hot-desk environments, one Mini Dock Series 3 model covers a wide range of T, L, and W series ThinkPads — simplifying procurement and making every desk interchangeable without per-user cable setups.

The USB 3.0 Always-On port is useful for anyone who leaves a device charging at their desk overnight. The dock stays powered even with no laptop attached, so phones and tablets charge without needing the laptop to be present.

Technical Specifications

Specification	Details
Model	ThinkPad Mini Dock Series 3, Type 4337
Dock Connector	ThinkPad proprietary docking connector
USB	2× USB 3.0 (incl. 1× Always-On), 2× USB 2.0
Video Outputs	1× DVI-D, 1× VGA — dual monitor support
Network	Gigabit Ethernet (RJ-45)
Audio	Stereo headphone + microphone jacks
Compatibility	ThinkPad T, L, W series (verify model before purchase)
Power Adapter	Not included — source compatible 90W or 135W Lenovo adapter separately
Warranty	12 months — Reboot IT

Is This Dock Right for You?

✓ Best For: • ThinkPad T, L, or W series users wanting a clean desk setup • Home and office workers who dock and undock daily • IT teams standardising hot-desk workstations • Users needing dual external monitors • Fast USB 3.0 external storage access

✗ Not Ideal For: • Non-ThinkPad laptops (incompatible connector) • Users requiring HDMI output (consider Ultra Dock) • Those who need laptop charging via dock (no adapter) • USB-C or Thunderbolt-only laptops • Users needing DisplayPort output

Condition Grades

Grade	Cosmetic Condition	Functionality
A — Excellent	Minimal signs of use; housing in near-new condition	All ports and functions fully tested and operational
B — Good	Light wear marks or minor scuffs on housing	All ports and functions fully tested and operational

Frequently Asked Questions

Which ThinkPad models are compatible with this dock?

The Mini Dock Series 3 (Type 4337) uses Lenovo's proprietary ThinkPad dock connector. It is compatible with select T, L, and W series ThinkPads. Check Lenovo's official compatibility list using your exact ThinkPad model number before purchasing.

Does it include a power adapter?

No — the power adapter is not included. You will need a compatible Lenovo 90W or 135W power supply (sold separately) to power the dock and charge your laptop through it.

Can I connect two monitors?

Yes. The dock has one DVI-D and one VGA output for dual monitor support. Supported resolution depends on your ThinkPad's GPU and the monitors connected.

Is USB 3.0 backward compatible?

Yes — USB 3.0 is fully backward compatible with USB 2.0 and USB 1.1 devices. They run at their native speed, not USB 3.0 speeds.

How does shipping work?

This item ships free via standard Australia Post delivery to any address in Australia. Orders dispatch within 1 business day from our Melbourne warehouse.