Does the docking station need to be powered or does it get its power over USB from the laptop?

Yes, it needs to be powered to run USB devices that require more power then a computer USB port can provide like DVD writers and external hard drives.

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Tripp Lite Microsoft Surface USB 3.0 Docking Station with USB-A Hub, HDMI 4K & Gigabit Ethernet (Gbe) Port (U342-HGU3)

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Adds 3 USB 3.0 ports, an RJ45 Gigabit Ethernet jack and an external HDMI 4K monitor to your Microsoft Surface or Surface Pro
Supports HDMI video resolutions up to 3840 x 2160 (4K x 2K) @ 24/25/30Hz
Supports data transfer rates up to 5 Gbps
Ensures true 10/100/1000 Mbps Ethernet network speeds
Plug and play with no software or drivers needed

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USB 3.0 Docking Station for Microsoft Surface and Surface Pro, USB-A, HDMI and G

Model
Brand	Tripp Lite
Model	U342-HGU3

Details
Changer Type	USB to HDMI / Mini DisplayPort
Color	Black
Cable Length	No
Specifications	AC Adapter Input: 100V - 240V, 50/60Hz, 0.4A Max Output: 5V 2A System Requirements: Any model Microsoft Surface or Surface Pro

Connectors
Output Connector	Side A: 1 x RJ45 (FEMALE) 3 x USB 3.0 A (FEMALE) 1 x HDMI (FEMALE) 1 x MINI DISPLAYPORT (FEMALE) PC/Server Connections: USB

Features
Features	Supports HDMI video resolutions up to 3840 x 2160 (4K x 2K) @ 24/25/30Hz Supports data transfer rates up to 5 Gbps Ensures true 10/100/1000 Mbps Ethernet network speeds Fits perfectly on Surface kickstand Plug and play with no software or drivers needed

Package Contents
Package Contents	U342-HGU3 USB 3.0 Docking Station Mini DisplayPort cable, 7 in. External power supply (Input: 100–240V, 50/60 Hz, 0.4A Max; Output: 5V, 2A) Owner's manual

Additional Information
First Listed on Newegg	October 13, 2016

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Limited Warranty period (parts): 3 years
Limited Warranty period (labor): 3 years
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Return Policies

Return for refund within: 30 days
Return for replacement within: 30 days
This item is covered by Newegg.com's 30-Day Return Policy.
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Tripp Lite Microsoft Surface USB 3.0 Docking Station with USB-A Hub, HDMI 4K & Gigabit Ethernet (Gbe) Port (U342-HGU3)

Learn more about the Tripp Lite U342-HGU3

Customer Reviews of the Tripp Lite U342-HGU3

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info

Item#: N82E16812329532

Tripp Lite Microsoft Surface USB 3.0 Docking Station with USB-A Hub, HDMI 4K & Gigabit Ethernet (Gbe) Port (U342-HGU3)

Learn more about the Tripp Lite U342-HGU3

Customer Reviews of the Tripp Lite U342-HGU3

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info