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  4. Pro A/V Extender & Repeater
  5. STARTECH

  6. Item#: N82E16815158379

  • $239.99
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    STARTECH;ST121HDBTE;ST121HDBTE The ST121HDBTE HDMI® over C
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    StarTech.com ST121HDBTE HDMI over CAT5 HDBaseT Extender - Power over Cable - Ultra HD 4K

    (5) Write a Review
    • 230 ft. Distance
    • 330 ft. Distance
    • Extend HDMI up to 230ft. (70m) over a single CAT5 cable with HDBaseT
    • Supports video resolutions up to 1080p
    • HDBaseT Extender / HDMI over single CAT5 or CAT6 Ethernet Extender / Power Over Cable / HDMI Extender Over CAT5 or CAT6 / POC Extender / HDBaseT CAT5
    • Works at distances up to 230 feet (70 meters)
    • Requires one power adapter for both the transmitter and receiver
    • Cost-effective HDMI extension through non-proprietary network cabling
    • Mounting hardware included for tidy installation
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    Overview
    Specs
    Reviews (5)
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    Extend HDMI up to 230ft (70m) over a single CAT 5e / Cat 6 cable with Power over

    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Limited Warranty period (parts): 2 years
    • Limited Warranty period (labor): 2 years
    • Read full details

    Return Policies

      We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.

    • Return for refund until: January 31, 2027
    • Return for replacement until: January 31, 2027
    • This item is covered by Newegg.com's Extended Holiday Return Policy.
    • Read full return policy for details.

    Manufacturer Contact Info

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    The StarTech.com ST121HDBTE is an HDMI-over-HDBaseT extender kit for sending video and audio over a single Cat5e/Cat6 cable, suited to offices, classrooms, or AV installations that need a display up to 230 ft. (70 m) from the source; it supports 1080p at that distance and 4K at up to 115 ft. (35 m).

    Recommended For

    • Commercial AV installers extending a signage feed across a building can use one Cat5e/Cat6 cable for runs up to 70 m at 1080p, with one power adapter serving both units.
    • Schools, auditoriums, and other installed AV spaces that need to place a display away from the source can use the extender with existing Cat5e/Cat6 cabling; it supports 1080p at up to 70 m.
    • Trade-show and auditorium teams setting up a demo station can keep source equipment separate from the viewing area and avoid running a long HDMI cable.
    • AV setups with a nearby outlet at only one end of the cable run can benefit from Power over Cable, which powers both the transmitter and receiver from one adapter.
    • Fixed installations carrying 4K video to a display within 35 m can use the extender when 4K at 30 Hz is sufficient.

    Spec Summary

    AttributeValue
    Best ForExtending an HDMI connection to a remote display over Cat5e or better cabling, including installations where power outlets are limited
    Video And Extension DistanceSupports 4096 × 2160 (4K) at 30 Hz up to 35 m (115 ft) and HD resolutions, including 1920 × 1200 or 1080p, up to 70 m (230 ft)
    Connections And CablingTransmitter: latching 19-pin HDMI female and RJ-45 female; receiver: 19-pin HDMI female and RJ-45 female; uses one Cat5e UTP cable or better
    Audio Support7.1-channel surround sound, including Dolby TrueHD and DTS-HD MA
    Power And InstallationPower over cable lets one included AC adapter power both transmitter and receiver from either side of the connection; mounting hardware included; no software or drivers required
    Power Adapter Specifications100–240 V AC input at 0.5 A; 12 V DC output at 1.5 A; positive center-tip polarity, M plug
    Dimensions And Weight0.98 × 2.64 × 3.15 in; 0.68 lb
    Model IdentifiersStarTech.com ST121HDBTE