SD20R56774 Lenovo ThinkPad Ultra docking station incl. 135W ac-adapter

LENOVO Original
199.00 EUR
incl. Tax (19%)
plus shipping charges
In stock.Until 2pm, shipping today.Also Express shipping possible.

Substitute part numbers:

01HY744, 01YT274

Supports: Video playback in UHD resolution (4,096 x 2,160 at 60 Hz) via DisplayPort/HDMI, fast laptop charge (Rapid Charge), PXE boot, Wake On LAN. Ultra variant with lockable lock for the laptop. - Warning: not suitable for Lenovo ThinkPad T490!

Item Number
01HY744, 01YT274,

The offered manufacturer number is an alternative (substitute) to the spare part number you are looking for.

Common data


Technical Data

Connexion to the laptop
Internal docking port
1x Audio-Combo
1x DC-In (Power supply)
1x Ethernet (RJ-45)
1x Kensington-Lock
1x USB 3.0 SS (Super Speed USB)
1x VGA
2x DisplayPort
2x USB-C
3x USB 3.0 SS (Super Speed USB)
Max. resolution of external monitors
1x 4K2K - 4096x2160
1x QXGA - 2048x1536
2x 4K2K - 4096x2160
3x UHD - 3840x2160
Delivery includes
2x keys for security lock
Docking Station
Installation manual
Power cable
Included ac-adaptor
Compatible operating systems
Linux / Ubuntu
Windows 10 (32bit/64bit)
Windows 7 (32bit/64bit)
Windows 8 (32bit/64bit)
Windows 8.1 (32bit/64bit)
Length / Width / Hight
37,3 cm / 15,5 cm / 5,5 cm


Use the existing interfaces of your laptop separately. Easily connect and disconnect the ports for e.g. mouse, printer, USB in a fast and secure way.  Mirroring or extending your desktop to external monitors.


Excerpt of suitable models for P/N SD20R56774
Lenovo ThinkPad T15 Gen 2 (20W4/20W5) , Lenovo ThinkPad P14s Gen. 1 (20Y1/20Y2) , Lenovo ThinkPad X13 (20UF/20UG) , Lenovo ThinkPad X13 Yoga (20SY/20SX) , Lenovo ThinkPad L14 Gen 1 (20U1/20U2) , Lenovo ThinkPad T580 (20L9/20LA) , Lenovo ThinkPad T480 (20L5) , Lenovo ThinkPad T480s (20L7/20L8) , Lenovo ThinkPad L480 (20LS/20LT) , Lenovo ThinkPad P52s (20LB/20LC)

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Videos & Contributions

Using a laptop with a dock even when it is folded down

In this quick tip we show how you can work with a docking station and an external monitor even when your laptop is folded down.

Learn more >

The "secret" with the power button

Why doesn't my notebook switch on when the docking station is switched on? Why does the power button on the docking station not work? Today we are getting to the bottom of these questions.
Learn more >
Docking station vs. port replicator

Docking station vs. port replicator

How does a docking station differ from a port replicator? This is a common question. In this post we would like to answer this question for you.
Learn more >
The power button does not activate the notebook?

The power button does not activate the notebook?

If the power button function of the docking station is not supported by the notebook. - "Wake On AC" can help
Learn more >

Important and useful informations about laptop

Frequently asked questions about Docking stations

All questions about Docking stations


Zubehör und passende Produkte

45N0501 original Lenovo AC-adapter 135 Watt extended

45N0501 original Lenovo AC-adapter 135 Watt extended
In stock
46.00 EUR
incl. Tax (19%)
plus shipping charges