StarTech.com HDMI Over HDBaseT Extender - 4K HDMI - 330' - Over GbE CAT5

StarTech.com ST121UTPHD2

Click image to enlarge or see more views.

Volume Discounts
Contact us and save even more if you meet these Big Deal qualifications.
Purchase a minimum of $3,000 of StarTech Products

Manufacturer Part#  ST121UTPHD2

UPC Code: 065030848480

Provantage Code:  STR92PR

Condition:  Factory New

  • Product Type: Video Extender Transmitter/Receiver
  • Connectivity Technology: Wired
  • Maximum Operating Distance: 328.08 ft
  • Maximum Video Resolution: 3840 x 2160
  • Transmitter Weight (Approximate): 1.28 lb
  • TAA Compliant: Yes

TAA CompliantBig DealsSatisfaction Guaranteed

NetworkingNetwork DevicesVideo Console Extenders


StarTech.com ST121UTPHD2 Specifications

    HDMI Over HDBaseT Extender - 4K HDMI - 330' - Over GbE CAT5

At a Glance

    • With HDBaseT extend HDMI, IR, and RS-232 through one CAT5e or CAT6 cable
    • Astonishing picture quality with support for resolutions up to UltraHD 4K
    • Hassle-free installation with a single CAT5e or CAT6 cable and built-in mounting hardware
    • 100m (330ft) maximum Cat5e or CAT6 cable distance
    • Supports bi-directional RS232 and IR extension
    • Dolby® TrueHD, DTS-HD MA Audio


    The StarTech.com HDBaseT extender kit, extends HDMI up to 330 feet (100 Meters) over a single CAT5e or CAT6 cable. The extender supports Ultra HD and Full HD resolutions (4K / 1080p) with support for 3D and the accompanying 7.1 digital audio. For added versatility the transmitter and receiver can be used to transmit IR and RS232 serial communication over the same cable. The versatility of this video extender makes it an ideal solution for digital signage applications.

    What is HDBaseT?

    HDBaseT is a standardized, zero latency, video distribution technology that's revolutionizing HDMI distribution. HDBaseT uses an advanced method of modulation that enables you to distribute uncompressed HDMI audio and video along with additional signals such as 100BaseT Ethernet, IR, RS-232 serial and power over cable.

    Extend More with HDBaseT

    The extender offers HDBaseT technology with HDMI, IR, and RS232 control in a single CAT 5 extender kit, for complete end-to-end control. Offering greater versatility than traditional HDMI extenders or HDMI cabling alone HDBaseT is the clear choice for every integrator and system designer. The IR extension enables you operate your display and an IR-enabled source device, such as a Blu-ray player or TV Set top box, from either end of your extension. While RS232 control let you to connect a serial I/O device at your display - an ideal solution for adding a serial touch screen interface to your remote display.

    Astonishing Picture Quality from an Impressive Distance

    With the A/V industry quickly adopting 4K as the new high-resolution video standard, long range video distribution can be a challenge with standard HDMI cables beginning signal degradation at 30 feet.

    With support for 4K you'll be amazed at how HDBaseT maintains your Ultra HD picture quality, four times the resolution of high-definition 1080p, even at 330 feet away from your video source. Plus, because the extender is still backward compatible with High-Definition 1080p displays and video sources, you can rest assured this extender will make your video source look great in any remote digital signage application.

    Simplify Your Setup

    This extender has been specially crafted for a smooth, tidy installation. HDBaseT technology allows for single cable installation, for seamless integration using existing CAT5e or CAT6 infrastructure, avoiding the hassle of running multiple cables, while reducing potential failure points. Mounting hardware is also built-in to both the extender and receiver for discrete, professional mounting.

    The ST121UTPHD2 is backed by a 2-year StarTech.com warranty and free lifetime technical support.

    More from the Manufacturer

Certifications & Standards

    • CE
    • FCC

Environmental Certification




Package Contents

    • 1 x Local HDMI Extender Unit
    • 1 x Remote HDMI Receiver Unit
    • 1 x IR Receiver Cable
    • 1 x IR Transmitter Cable
    • 1 x HDMI Cable x 4 ft (1.2 Meters)
    • 2 x Universal Power Adapter NA / UK / EU
    • 1 x User Manual


General Information
Product NameHDMI Over HDBaseT Extender - 4K HDMI - 330' - Over GbE CAT5
Manufacturer Part NumberST121UTPHD2
Product TypeVideo Extender Transmitter/Receiver
Technical Information
Connectivity TechnologyWired
Number of Input Devices Supported1
Number of Output Devices Supported1
Maximum Operating Distance328.08 ft
Network (RJ-45)Yes
Serial PortYes
Number of Network (RJ-45) Ports2
Number of HDMI Inputs1
Number of HDMI Outputs2
Media & Performance
Media Type SupportedTwisted Pair
Twisted Pair Cable StandardCategory 6
Graphics Modes4K
Maximum Video Resolution3840 x 2160
Physical Characteristics
Transmitter Weight (Approximate)1.28 lb
Receiver Weight (Approximate)1.28 lb
Limited Warranty2 Year
Environmentally FriendlyYes
Country of OriginTaiwan
TAA CompliantYes
Other Information
Input Voltage110 V AC

220 V AC

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Supplies/Accessories for StarTech.com ST121UTPHD2

StarTech.com 20 Ft HDMI to DVI-D Cable - M/M


Considering a Volume Purchase?
You may be able to save even more on your order if you meet the following StarTech.com BIG DEAL qualifications:

Purchase a minimum of $3,000 of StarTech Products

Shop with confidence! Provantage is an authorized StarTech.com dealer.

Visit the Manufacturer
Learn more by visiting the manufacturer's website.

© Copyright 1984-2021 Provantage
StarTech.com ST121UTPHD2