Lenovo ThinkPad Ultra Docking Station US (40AJ0135US)
Bottom line: The Lenovo ThinkPad Ultra Docking Station US: Side connector docks driver-free, no USB-C handshake or dock software to install; main trade-off: locked to specific 2018-era ThinkPads; will not fit newer USB-C-only models.
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Pros & Cons
Pros
- ✓ Side connector docks driver-free, no USB-C handshake or dock software to install
- ✓ Drives three UHD displays via 2x DisplayPort 1.4, HDMI 2.0, and VGA
- ✓ Four USB 3.1 Gen2 ports at 10Gbps, one always-on for charging a phone
- ✓ PXE Boot, Wake-on-LAN, and MAC pass-through for IT-managed ThinkPad fleets
- ✓ Ships complete: 135W slim-tip adapter, power cord, and two locking keys
Cons
- ✗ Locked to specific 2018-era ThinkPads; will not fit newer USB-C-only models
- ✗ Mechanical side connector means no use with any non-ThinkPad laptop
- ✗ VGA output is dead weight for most modern desk setups
- ✗ 135W adapter is the only supported brick; replacements are a proprietary slim tip
Manufacturer description
Lenovo's mechanical side connector is the point: it is driver-free, so your ThinkPad wakes into the dock without the USB-C handshake lottery, and the mirrored power button lets you unlock and go without opening the lid. Port coverage is genuinely deep for the money. You get four USB 3.1 Gen2 ports running at 10Gbps, one of them always-on for phone charging, plus two USB-C ports at 10Gbps with 5V/3A power. Video runs across two DisplayPort 1.4 outputs, one HDMI 2.0, and one VGA for the conference room projector nobody has replaced yet, feeding up to three UHD displays. Gigabit Ethernet brings…
SpecPicks Verdict
SpecPicks scored Lenovo ThinkPad Ultra Docking Station US using a rating × review-volume × price-fit model applied to published specs and reviews across the PC & gaming hardware category. Lenovo's PC & gaming hardware lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for PC & gaming hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Will this dock work with my ThinkPad?
Lenovo lists the 40AJ0135US as compatible with the A485, L480, L580, P52s, T480, T480s, T580, X280, and X1 Carbon Gen 6 (20KG, 20KH). It uses the mechanical side connector, so models without that connector will not dock.
How many monitors can I actually run?
Up to three UHD displays. The dock provides two DisplayPort 1.4 outputs, one HDMI 2.0, and one VGA, though the total is capped at three simultaneous external screens.
Does it come with a power adapter?
Yes. Retail packaging includes the 135W slim-tip AC adapter with a two-pin power cord, two locking keys, and a setup poster.
Do I need to install drivers?
No. The side connector is designed for a driver-free connection, which is why it avoids the USB-C dock driver issues common on universal docks.
Is this a good buy at this price?
It is a budget-friendly way to get hardware originally aimed at enterprise buyers. Price and availability change, so check the current listing before ordering.
Key Features
- - Lenovo USA ThinkPad Ultra Docking Station (P/N; 40AJ0135US ) For P52s, L580, L480, T580, P580p, T480s, T480, X1 Carbon Gen 6, X280.
- - Lenovo retail packaging includes the Ultra dock, 135W Slim tip AC adapter with 2 pin power Cord, 2 locking keys, set up poster.
- - 1 HDMI port, Intel vapor, PXE Boot, Wake-On LAN, and Mac address pass-through, optional master key lock. Allows for a 3 monitor hook up.
- - 4x USB 3. 1 Gen2 (10Gbps) with 1 always-on USB charging, 2x USB-C ports (10Gbps, 5V 3a power), 10/1000 Gigabit Ethernet, 2x DisplayPort 1. 4, 1x HDMI 2. 0, 1x VGA, 1x Stereo/mic combo Audio port, 1x DC-in.
- Compatible Devices Thinkpad A485, L480, L580, P52S, T480, T480S, T580, X1 Carbon 20Kg, 20Kh, X280
Full Specifications
| UPC | 192076019915 |
|---|---|
| ASIN | B079NM5JK4 |
| Brand | Lenovo |
| Color | Black |
| Wattage | 135 |
| Unit Count | 1.0 Count |
| Item Weight | 1.8 Pounds |
| Manufacturer | Lenovo (United States), Inc. |
| Built-In Media | Lenovo docking station |
| Item Type Name | Lenovo ThinkPad Ultra Docking Station - VGA, HDMI, 2 x DP - for ThinkPad A485, L480, L580 and More |
| Number of Ports | 6 |
| Total USB Ports | 9 |
| Total Usb Ports | 9 |
| Total HDMI Ports | 1 |
| Compatible Devices | ThinkPad A485, L480, L580, P52s, T480, T480s, T580, X1 Carbon 20KG, 20KH, X280 |
| Hardware Interface | USB |
| Product Dimensions | 14.9"L x 2.1"W x 6.3"H |
| Warranty Description | 3 years limited warranty |
| Item Dimensions L x W x H | 14.9"L x 2.1"W x 6.3"H |
| Total Number of HDMI Ports | 1 |
Ready to buy?
Lenovo ThinkPad Ultra Docking Station US (40AJ0135US) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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