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Lenovo

Lenovo 42W3015: ThinkPad X60/X61 UltraBase Docking Station

USB 2.0

Lenovo UltraBase docking station instantly adds ports and an optical drive bay to your ThinkPad X60 or X61.

$59.99*
✓ In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The Lenovo ThinkPad UltraBase docking station (42W3015 / 42W4635) was designed to turn the compact ThinkPad X60 and X61 series into full-featured desktop workstations. By simply sliding the laptop into the dock, users gain access to additional ports for connecting external displays, USB peripherals, and network cables — transforming the ultraportable ThinkPad into a more capable desk-bound setup without any cable juggling. The dock also passes power through to the laptop, so a single AC adapter connection at the desk keeps everything charged and running.

A key feature of the UltraBase is its Ultrabay Slim expansion slot, which can accept compatible optical drives, secondary hard drive caddies, or additional battery modules. This modular approach gives users flexibility to customize their docking setup based on their needs. While this is a legacy product designed for a specific generation of ThinkPads, it remains a useful accessory for anyone still relying on the X60 or X61 as a daily driver or secondary machine. The build quality reflects Lenovo's business-class standards, with a solid docking mechanism and stable footprint.

Key Features

4 x USB 2.0, 1 x VGA

1 x RJ-45 Ethernet port, 1 x RJ-11 Modem port

Integrated key lock and cable lock slot (cable lock sold separately)

Supports optional DVD or Hard drive in expansion slot

COMPATIBLE with the X60, X60s, X61, X61s

Specifications

Brand
Lenovo
Model
42W3015 (equivalent to 42W4635)
Type
Docking Station (UltraBase)
Compatibility
ThinkPad X60, X60s, X61, X61s

Pros & Cons

👍 Pros

  • Snap-in docking requires no cables, making it quick to dock and undock the laptop
  • Adds additional ports and connectivity that the compact X60/X61 laptops lack on their own
  • Includes an Ultrabay Slim slot for adding an optical drive or secondary hard drive caddy
  • Provides a stable, elevated platform that can improve ergonomics at a desk

👎 Cons

  • Compatibility is limited exclusively to the older ThinkPad X60 and X61 series
  • Does not include an optical drive or other Ultrabay accessory — these must be purchased separately
  • As a legacy accessory, finding replacement parts or support may be difficult
  • The docking connector design is proprietary to this generation and cannot adapt to newer ThinkPads

Frequently Asked Questions

It is designed specifically for the Lenovo ThinkPad X60, X60s, X61, and X61s series laptops. It is not compatible with other ThinkPad lines.
The ThinkPad snaps directly into the docking connector on the UltraBase's top surface — no cables are required. The laptop slides in and locks into place for a secure, single-motion dock connection.
The UltraBase has a bay that accepts Lenovo Ultrabay Slim optical drives and other Ultrabay accessories, but the drive is typically sold separately. Check the listing details to confirm what is included.
Yes, when the AC adapter is connected to the UltraBase, it powers and charges the docked ThinkPad, so you only need to plug in one cable at your desk.
These are equivalent model numbers for the same UltraBase docking station. Both refer to the ThinkPad X6x series UltraBase and are functionally identical.

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