
1
1111 W. 35th Street, Chicago, IL 60609 USA
tripplite.com/support
Copyright © 2021 Tripp Lite. All trademarks are the sole
property of their respective owners.
Dual-Display USB-C
Docking Stations
Model: U442-DOCK8-GG, U442-DOCK8G-GG
Owner’s Manual
WARRANTY REGISTRATION
Register your product today and be automatically
entered to win an ISOBAR
®
surge protector
in our monthly drawing!
tripplite.com/warranty
Este manual esta disponible en español en la
página de Tripp Lite: tripplite.com/support
Ce manuel est disponible en français sur le
site Web de Tripp Lite : tripplite.com/support
Русскоязычная версия настоящего руководства
представлена на веб-сайте компании
Tripp Lite по адресу: tripplite.com/support
Dieses Handbuch ist in deutscher Sprache auf der
Tripp Lite-Website verfügbar: tripplite.com/support

2
Product Features
• Supports 4K resolutions up to 3840 x 2160 @
30 Hz in DisplayPort Multi-Stream Transport (MST)
Mode to extend desktop image across 3 displays at
the same time
• Each HDMI port individually supports 4K resolutions
up to 3840 x 2160 @ 60 Hz with 4:4:4 chroma
subsampling, 36-bit Deep Color (12 bits per
channel) and HDCP 1.4/2.2
• USB-A hub ports support USB 3.2 Gen 1 speeds
up to 5 Gbps; one dedicated port supports up to
7.5W* for charging
• USB-C PD 3.0 port supports 20V 5A (100W) power
output for charging host device and ensures stable
connection during connection and disconnection**
• Dual card readers support Secure Digital v3.0 UHS-I
(Ultra High Speed) and can be used simultaneously
• Supports DisplayPort 1.4 Alternate Mode for
outputting 4K video and digital audio without special
software drivers
• Compatible with USB-C and Thunderbolt 3
connectors
• Plug-and-play operation with no software required
for easy, immediate installation
• RJ45 port supports true 10/100/1000 Mbps
network speeds when Wi-Fi is weak or unavailable
(U442-DOCK8G-GG only)
* USB-A ports share maximum of 5V 1.6A (8W) for downstream charging
**First 15W dedicated to USB ports; remaining 85W is passed to charge
the host device
U442-DOCK8-GG and U442-DOCK8G-GG

3
Package Contents
• U442-DOCK8-GG or U442-DOCK8G-GG
• Owner’s Manual
Optional Accessories
• P569-XXX-CERT High-Speed HDMI 2.0 Cables
• U322-XXX-BK USB 3.2 SuperSpeed Device Cable
(A/B Male)
• M100-XXX-HD Heavy-Duty USB-A to Lightning Cable
• N202-Series Cat6 24 AWG Solid-Wire Patch Cables
(U442-DOCK8G-GG only)

4
Installation
Note: When connecting to a DP 1.4 Alt Mode
supported host, the max resolution of the HDMI ports
is 4K/60 Hz (Dual: 4K/30 Hz). If connecting to a
DP 1.2 Alt Mode supported host, the max resolution
of the HDMI ports is 4K/30 Hz (Dual: 1080p/60 Hz)
due to the limited bandwidth.
USB Devices
Type-C
PD Adapter
SD Card
Micro
SD Card
Type-C Host PC
Ethernet Router
HDMI Display 1 HDMI Display 2
1 x 4K/60 Hz
OR 2 x 4K/30 Hz under MST

5
Installation
1. Connect the built-in USB-C cable to your source
device’s USB-C or Thunderbolt 3 port.
Notes:
• To transfer both video/audio and data signals,
source must support DisplayPort Alt Mode.
• Multi-Stream Transport (MST) is required to
achieve extended dual displays. Displays will be
mirrored under Single-Stream Transport (SST).
Typically, Windows systems support MST, while
Mac systems support SST.
2. With user-supplied HDMI cable(s), connect one or
two HDMI-compliant displays to the docking station.
3. Connect up to two (U442-DOCK8G-GG) or three
(U442-DOCK8-GG) USB 3.2 Gen 1 peripheral
devices. One dedicated USB-A port provides up to
7.5A of fast charging power.
4. Insert a Micro SD and/or SD card into the
memory card slots to transfer data to or from the
source device.
5. Charge your source, up to 20V 5A (100W), using
the available USB-C PD 3.0 port.
6. (U442-DOCK8G-GG only) Connect a user-supplied
Cat5e/6 Ethernet cable to the RJ45 port to join
a wired Gigabit Ethernet network at speeds up to
10/100/1000 Mbps.

6
Specifications
Model U442-DOCK8-GG U442-DOCK8G-GG
Input
Connector
USB-C (Male) USB-C (Male)
Output
Connectors
(x2) HDMI (Female)
USB-C (Female)
(x3) USB-A 3.2 Gen 1 (Female)
Micro SD (Female)
SD (Female)
(x2) HDMI (Female)
USB-C (Female)
(x2) USB-A 3.2 Gen 1 (Female)
Micro SD (Female)
SD (Female)
RJ45 (Female)
Operating
Temperature
32° to 113°F (0° to 45°C) 32 to 113°F (0° to 45°C)
Storage
Temperature
14° to 158°F
(-10° to 70°C)
14° to 158°F
(-10° to 70°C)
Operating
Humidity
10% to 85% RH, Non-
Condensing
10% to 85% RH,
Non-Condensing
Storage
Humidity
5% to 90% RH,
Non-Condensing
5% to 90% RH,
Non-Condensing
Unit
Dimensions
4.33 x 0.45 x 2.32 in. /
11 x 1.1 x 5.9 cm
4.33 x 0.45 x 2.32 in. /
11 x 1.1 x 5.9 cm
Unit Weight 0.22 lb. / 0.1 kg 0.22 lb. / 0.1 kg
HDCP
Specification
1.4/2.2 1.4/2.2
USB
Specification
USB-A
(USB 3.2 Gen 1, 5 Gbps)
USB-A
(USB 3.2 Gen 1, 5 Gbps)
Max
Supported
Video
Resolution
3840 x 2160
@ 60 Hz (Single)
3840 x 2160
@ 30 Hz (Dual)
3840 x 2160
@ 60 Hz (Single)
3840 x 2160
@ 30 Hz (Dual)
Network
Speed
N/A 10/100/1000 Mbps
Chroma
Subsampling
4:4:4 4:4:4
PD Charging
Spec
PD 3.0 (100W) PD 3.0 (100W)
SD/
Micro SD Slot
V3.0 UHS-I
(Ultra High Speed) SDR12
V3.0 UHS-I
(Ultra High Speed) SDR12

7
Warranty
3-Year Limited Warranty
Seller warrants this product, if used in accordance with all applicable
instructions, to be free from original defects in material and workmanship for a
period of three (3) years from the date of initial purchase. If the product should
prove defective in material or workmanship within that period, Seller will repair
or replace the product, at its sole discretion.
THIS WARRANTY DOES NOT APPLY TO NORMAL WEAR OR TO DAMAGE
RESULTING FROM ACCIDENT, MISUSE, ABUSE OR NEGLECT. SELLER MAKES
NO EXPRESS WARRANTIES OTHER THAN THE WARRANTY EXPRESSLY SET
FORTH HEREIN. EXCEPT TO THE EXTENT PROHIBITED BY APPLICABLE LAW, ALL
IMPLIED WARRANTIES, INCLUDING ALL WARRANTIES OF MERCHANTABILITY
OR FITNESS, ARE LIMITED IN DURATION TO THE WARRANTY PERIOD SET
FORTH ABOVE; AND THIS WARRANTY EXPRESSLY EXCLUDES ALL INCIDENTAL
AND CONSEQUENTIAL DAMAGES. (Some states do not allow limitations on
how long an implied warranty lasts, and some states do not allow the exclusion
or limitation of incidental or consequential damages, so the above limitations
or exclusions may not apply to you. This warranty gives you specific legal rights,
and you may have other rights which vary from jurisdiction to jurisdiction.)
WARNING: The individual user should take care to determine prior to use
whether this device is suitable, adequate or safe for the use intended. Since
individual applications are subject to great variation, the manufacturer makes
no representation or warranty as to the suitability or fitness of these devices for
any specific application.
Product Registration
Visit tripplite.com/warranty today to register your new Tripp Lite product. You’ll be automatically
entered into a drawing for a chance to win a FREE Tripp Lite product!*
*No purchase necessary. Void where prohibited. Some restrictions apply. See website for details.
Use of this equipment in life support applications where failure of this equipment can reasonably
be expected to cause the failure of the life support equipment or to significantly affect its safety
or effectiveness is not recommended.
Tripp Lite has a policy of continuous improvement. Specifications are subject to change without notice.
Photos and illustrations may differ slightly from actual products.

8
1111 W. 35th Street, Chicago, IL 60609 USA
tripplite.com/support
21-10-325 933CF9_RevC
