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Product specifications

Kensington SD4781P EQ USB-C & USB-A Dual 4K Docking Station with 100W Power Delivery

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Dual 4K Docking Station with 100W Power Delivery, USB-A 3.2 Gen2, USB-C 3.2 Gen2, 4x USB-A 3.2 Gen1, 2x DisplayPort++ 1.2, 2x HDMI 2.0, RJ45, 3.5 mm, 210 x 90 x 30.0 mm

Part K33603NA · UPC 085896336037

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  • Supports USB-C® and legacy USB-A laptops running Windows 7 or above, macOS 10.14 or above, Chrome OS 44 or above.
  • The plastic in this product contains up to 50% post-consumer recycled (PCR) content.* Does not include the cable, power supply, or power cords.
  • Ultra HD on up to 2 external monitors. Also supports M1/M2/M3 MacBook with dual displays.
  • Delivers up to 100W of Power Delivery to compatible laptops while powering connected accessories. USB-A laptops require optional power splitter (K38310NA) for Power Delivery.
  • Delivers speeds up to 10Gbps via 1x USB-C® port and 5x USB-A ports. Also includes 2x HDMI® 2.0 ports, 2x DP++ 1.2 ports, a Gigabit Ethernet port, and an audio combo jack.
  • Host cable is equipped with secure screw lock connector for a consistent and reliable connection between the docking station and the laptop.
  • Accommodates Zero-Footprint Mounting and Kensington Security Lock.

About this product

The SD4781P EQ USB-C® & USB-A Dual 4K Docking Station is a versatile and sustainable dock that supports USB-C® and legacy USB-A* laptops with the all-in-one benefits of video, data, and power. Delivering support for up to 2 external Ultra HD monitors (4K @ 60Hz), and the ability to select between HDMI® 2.0 and DP++ 1.2 connections (4 video ports for up to 2 external displays), the SD4781P eliminates the need for cumbersome adapters. It provides up to 100W of power delivery to the laptop and dock and delivers data transfer speeds up to 10Gbps via 6 USB ports. Additional features include host cable with secure screw lock connection, Gigabit Ethernet port, combo audio jack, mountable design, sustainable components, optional Kensington DockWorks™ software, and three-year limited warranty. *USB-A devices require optional power splitter (K38310NA) for Power Delivery.

Universal Compatibility

Supports USB-C® and legacy USB-A laptops running Windows 7 or above, macOS 10.14 or above, Chrome OS 44 or above.

Sustainability Focused

The plastic in this product contains up to 50% post-consumer recycled (PCR) content. *Does not include the cable, power supply, or power cords.

Dual 4K Video via HDMI® 2.0 and DP++ 1.2

Four video ports allow you to select between HDMI® 2.0 and DP++ 1.2 without the need for cumbersome adapters. Also supports M1/M2/M3 MacBook with dual displays.

Up to 100W Power Delivery

Delivers power to laptop, docking station, and connected accessories. Supports up to 100W for USB-C® Alt Mode laptops. USB-A laptops require optional Power Splitter (K38310NA) for Power Delivery.

Multiple Ports

Delivers speeds up to 10Gbps via 1x USB-C® port and 5x USB-A ports. Front: 1x USB-C® 3.2 Gen2 up to 5V/3A or up to 9V/2A for supported devices, and 1x USB-A 3.2 Gen2 up to 5V/1.5A, supports BC 1.2, up to 5V/2.4A for Apple devices; Back: 4x USB-A 3.2 Gen1 up to 5V/0.9A. Also includes a Gigabit Ethernet port and audio combo jack.

Secure Screw Lock Connection

Host cable is equipped with secure screw lock connector for a consistent and reliable connection between the docking station and the laptop.

Zero-Footprint Mounting Option and Security Cable Lock Slots

Maximize desktop space by mounting your docking station out of the way. Mounting bracket sold separately (K34050WW). Protect your investment with a Kensington cable lock (K65020WW or K65021WW), sold separately.

Free Kensington DockWorks™ Software and 3-Year Limited Warranty

Free DockWorks™ software delivers the best connection, performance, and security from your Kensington dock. Enjoy peace of mind knowing your covered by Kensington with a professional warranty.

Manufacturer warranty information

3-year limited

Ports & interfaces

Connectivity technology
Wired
Host interface
USB 3.2 Gen 2 (3.1 Gen 2) Type-C
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
4
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity
1
USB Power Delivery (USB PD)
Yes
USB Power Delivery revision
3.0
USB Power Delivery up to
100 W
HDMI ports quantity
2
HDMI version
2.0
DisplayPorts quantity
2
DisplayPort version
1.2
Combo headphone/mic port
Yes
Headphone connectivity
3.5 mm
DC-in jack
Yes

Network

Ethernet LAN
Yes
Ethernet LAN (RJ-45) ports
1
Ethernet LAN data rates
10,100,1000 Mbit/s

Performance

Card reader integrated
No
Data transfer rate
10 Gbit/s
HD type
4K Ultra HD
Maximum digital resolution
4096 x 2160 pixels
Number of displays supported
2
Cable lock slot
Yes
Cable lock slot type
Kensington
Product colour
Black
LED indicators
Yes
Plug and Play
No
Charging function
Yes
Housing material
Polycarbonate (PC), Acrylonitrile butadiene styrene (ABS), Metal
Country of origin
Thailand

Power

Power source type
DC
AC input voltage
100 - 240 V
Input current
1.8 A
Power supply
170 W
Output voltage
20 V
Output current
8.5 A

Software

Windows operating systems supported
Windows 7, Windows 8, Windows 10, Windows 11, Windows 8.1
Mac operating systems supported
Mac OS X 10.14 Mojave, Mac OS X 10.15 Catalina, Mac OS X 11.0 Big Sur, Mac OS X 12.0 Monterey, Mac OS X 13.0 Ventura, Mac OS X 14.0 Sonoma, Mac OS X 15.0 Sequoia
Other operating systems supported
ChromeOS

Operational conditions

Operating temperature (T-T)
0 - 40 °C
Storage temperature (T-T)
-18 - 60 °C

Sustainability

Sustainability certificates
ErP

Weight & dimensions

Width
210 mm
Depth
90 mm
Height
30 mm
Weight
385 g

Packaging data

Package width
235 mm
Package depth
150 mm
Package height
90 mm
Package weight
1.46 kg

Packaging content

Warranty card
Yes
Cables included
USB, Power
AC adapter included
Yes
Quick start guide
Yes

Technical details

Warranty period
3 year(s)
Compliance certificates
Federal Communications Commission (FCC), CE, CB, RoHS, UKCA

Specifications and images: Database Right data-sheet 2026 Icecat. All rights reserved. Supplied as is, without warranty. Specs Icecat · Open Content License

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