HDMI Over CAT5/CAT6 Extender with Power Over Cable - 165 ft (50m)

Extend HDMI® up to 165ft (50m) over Cat5e/6 cabling with Power over Cable to Receiver

Product ID: ST121SHD50

3,3 stars (3 reviews) |
  • Supports Cat5e or Cat6 Ethernet cabling (50m)
  • Power Over Cable allows a single power source to operate the Transmitter and Receiver
  • Includes transmitter (local) and receiver (remote) units
Your price
€154,99 EUR excl. VAT
€192,19 EUR incl. VAT

The ST121SHD50 HDMI® over Cat5e/Cat6 Video Extender kit lets you extend HDMI video and audio by up to 165 feet (50 Meters) over dual Cat5e cables or dual Cat6 cables. For added versatility the kit features Power Over Cable and only requires a single power adapter that can be connected to either the Transmitter or Receiver.

With support for High-Definition resolutions of up to 1920x1080 / 1080p and the accompanying digital audio, this cost-effective HD extender can easily be installed using new or existing Ethernet infrastructure wiring. For a convenient plug-and-play installation, the HDMI extender features built-in EDID monitor emulation, which ensures native resolution and maximum compatibility with your display or projector.

For added flexibility and convenience, HDMI cables up to 32ft (10m) can be connected to both the local and remote units, which lets you extend your HDMI signal to even further distances.

The HDMI extender kit offers a point-to-point digital signage solution right out of the box, including both local transmitter and remote receiver units, along with optional hardware that lets you mount the units as needed. Plus, with Power Over Cable, you can easily extend an HDMI signal in areas where access to power outlets is limited.

This product is TAA compliant and backed by a Startech.com 2-year warranty with free lifetime technical support.

Applications

  • Extend HDMI when power outlets are limited, with only a single power adapter required at either the Transmitter or Receiver using Power Over Cable
  • Place the display in a convenient viewing area, while the system equipment is placed elsewhere in a clean and secure environment
  • Optimize placement of digital signage in healthcare, education, retail, and government facilities

The StarTech.com Advantage

  • Requires only a single power adapter that can be connected to either the Transmitter or Receiver
  • Clean, professional installation, using optional mounting hardware (included)
  • Cost-effective HDMI extension through non-proprietary network cabling

Partner Numbers

  • Ingram Finland V932864
  • UPC 065030851404

Specifications

Warranty Information Warranty 2 Years
Connector(s) 1 - Local Unit Connectors HDMI (19 pin)
2 - Local Unit Connectors RJ-45
1 - Remote Unit Connectors HDMI (19 pin)
2 - Remote Unit Connectors RJ-45
Environmental Operating Temperature 0°C to 40°C (32°F to 104°F)
Storage Temperature -10°C to 60°C (14°F to 115°F)
Humidity 0% - 80 %
Hardware Ports 1
Cabling Cat 5 UTP or better
Audio Yes
Rack-Mountable Yes
Daisy-Chain No
Indicators 1 - LED Indicators Power
Packaging Information Package Height 65 mm [2,6 in]
Package Length 23,7 cm [9,3 in]
Shipping (Package) Weight 935 g [33,0 oz]
Package Width 15,7 cm [6,2 in]
Performance Max Distance 50 m / 165 ft
Maximum Digital Resolutions 1080p / 1920x1080
Supported Resolutions 1080i
- Cat6 (stranded or solid) - up to 50m
- Cat5e (solid) - up to 50m
- Cat5e (stranded) - up to 40m

1080p
- Cat6 (solid or stranded) - up to 40m
- Cat5 (solid) - up to 20m
- Cat5 (stranded) - up to 16m

See product manual for further details
Wide Screen Supported Yes
General Specifications Maximum Distances - (1080i only)
CAT5E (stranded) - 40m (130 ft)
CAT5E (solid) - 50m (165 ft)
CAT6 (stranded or solid) - 50m (165 ft)
Physical Characteristics Weight of Product 314 g [11,1 oz]
Color Black
Material Aluminum
Product Length 80 mm [3,1 in]
Product Width 51 mm [2,0 in]
Product Height 21 mm [0,8 in]
Power Power Source AC Adapter Included
Input Voltage 100 - 240 AC
Input Current 0.5 A
Output Voltage 12V DC
Output Current 1.5 A
Center Tip Polarity Positive
Plug Type M
Power Consumption (In Watts) 18
Special Notes / Requirements Note This extender requires two CAT5 cables for the entire distance of your cable run.
The extender does not work through Ethernet equipment, such as switches or routers.
What's in the Box 1 - Included in Package HDMI over CAT5e/6 UTP transmitter
HDMI over CAT5e/6 UTP receiver
universal power adapter (NA / EU / UK / AU)
2 - Included in Package mounting brackets
foot pad set
1 - Included in Package instruction manual

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Drivers/Downloads

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Manual(s):

Datasheet

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Frequently Asked Questions

Installation

There are a few things you'll want to take care of before you deploy your new video extender in your setup.

It’s important to make sure you have everything you will need ahead of time. These items are listed below.

  • Transmitter
  • Receiver
  • Video source
  • Display
  • Video cables
  • (Optional) Ethernet or fiber cables
  • (Optional) Power adapter(s)

It’s also important to test everything in a simplified setup ahead of time to make sure everything works and that you understand how it works. 

In order to set up your video extender, complete the following:

  1. Position your video transmitter near your video source.
  2. Connect the video output from your video source to the video transmitter.
  3. (Optional) Connect the power adapter to the video transmitter.

Note: Not all video extenders require external power, or require external power on both ends.  Refer to the manual for more information.

  1. Position your video receiver near your display.
  2. Connect the video output from your video receiver to your display.
  3. (Optional) Connect the power adapter to the video receiver.
  4. If using a wired video extender, connect your network cabling between the video transmitter and the video receiver.
  5. (Optional) If you are extending anything else supported by your video extender connect those devices to the transmitter and receiver.
  6. (Optional) If you are using a wireless extender, there may be a sync button you need to press to pair the transmitter and receiver.

Now that you have set up your video extender, you can check that everything is working.  You should be able to see your video source's output on the display connected to the video receiver.

If at this point you have further questions regarding a Startech.com video extender, contact our technical support team for further assistance. 

To get the highest quality signal from your source to your display when you use an HDMI extender, do the following:

  • Make sure that the HDMI versions of the source, extender, and destination are compatible. For example, if you require 3D support, make sure that all of the devices can support 3D over HDMI.

  • Use the least amount of adapters, splitters, or converters as possible. Each device that you use in your setup creates additional points of potential failure and creates more steps for an HDCP key to hop through, which may cause issues with older displays. For more information on HDCP, refer to the following FAQ: http://www.startech.com/faq/video_signal_converters_HDCP.

  • Use an HDMI extender that exceeds the requirements of the setup. For example, if you need to extend the signal 200 feet, it is best to use an extender capable of more than 200 feet.

  • Make sure that all of the CAT 5/6 runs are as straight as possible, with the least amount of coiling.

  • Make sure that all of the patches, wall jacks, and cables use the highest possible CAT specification, (for example, CAT 6), and were tested to conform to the standard.

  • Use patches, wall jacks, and cables with the same pin configuration. For more information on T568A versus T568B wiring, refer to the following FAQ: http://www.startech.com/faq/network_cables_a_vs_b_pinout.

  • Keep the cabling away from sources of high noise.

  • Make sure that you use adequate electrical grounding in your setup.

Troubleshooting

  1. The power adapter may not be connected at the correct unit or may not be connected at all.  Please check your product manual to see where your power adapter has to be positioned.
  2. An adapter to another video signal may be connected to the Transmitter or Receiver unit.  Please avoid any converters for the initial setup.
  3. The Cat 5 or 6 cable coming from the transmitter or receiver unit may be connected to a network switch.  Some of our video extenders will work in this configuration, but others will not. Please check your product manual to see if your model can be used connected to an IP network. For the initial setup, avoid connecting the Cat 5 or 6 cables to any network switch, hub, or router.
  4. The category of Unshielded Twisted Pair (UTP) cables may not meet StarTech.com’s requirements. Ensure at least Cat 5, 5e, or six cables are used, and they have eight wires. Some Cat 5 cables only have four wires. If using Cat 6 cables, be aware they have more twists per foot, so you may have to use shorter cable lengths if using Cat 6 cabling between your video extenders.
  5. Bundling up the UTP cabling connected to the extenders can cause crosstalk, which will prevent the video signal from showing on the display.  Unwrapping the cable should resolve this issue.
  1. Please check to see if your model has an adjustable Gain dial on the remote unit.
  2. If it does, use it to adjust the color until it is acceptable.
  3. Replace the VGA cable with a higher quality cable like StarTech.com’s MXT101MMHQ.

When you troubleshoot issues with a video extender, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:

  • Video and Ethernet cables

  • Video extender

  • Video source (such as a DVD player or computer)

  • Video destination (such as a monitor or projector)

Note: When you are testing setup components, you should avoid using video adapters. For example, if you are converting a VGA source to HDMI for use with an HDMI extender, you should use an HDMI source when you test the components.

To test your setup components, try the following:

  • Use the cable, video extender, video source, and video destination in another setup to see if the problem is with the components or the setup.

  • Use a different cable, video extender, video source, and video destination in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup.

When you test your cables, it is recommended that you do the following:

  • Test each cable individually.

  • Use short cables when you are testing.

When you test the video source and video destination, it is recommended that you do the following:

  • Remove the video extender from your setup and test to make sure that the video source and video destination work together without the video extender.

  • Test to make sure that the video source and video destination work together at the resolution that you want to use.

Note: In order for your setup to work properly, the video source, extender, and destination all need to support the resolution that you are using.

Before You Buy

You should only use video converters and extenders if it is absolutely necessary to do so. In many cases, most video converters and extenders are not necessary if you purchase the correct cable.

The following table lists the maximum length of cable for common video standards.

Video standard Maximum length
DisplayPort 50 ft. (15.2m)
HDMI 50 ft. (15.2m)
DVI 50 ft. (15.2m)
VGA 200 ft. (71m)

Note: StarTech.com offers cables longer than what is listed above, including active cables, which typically include built-in active signal boosters that allow for longer cables. Active cables are specifically designed to exceed the suggested maximum lengths and are tested at the listed specifications (for example, the maximum listed resolution).

Video adapters

Video adapters passively adapt a cable from one connector type to another. Video adapters do not change the signal type, or change the video standard.

Examples of common applications for adapters include the following:

  • DVI-I to VGA

  • RCA to BNC

  • Mini DisplayPort to DisplayPort

  • Couplers (female to female, or male to male)

Note: You can use a coupler to extend a cable for a short distance. However, each coupler that you use can introduce signal loss, which degrades the signal quality.

Video converters

Video converters actively process and change the signal type from one video standard and convert it to another standard. They are typically used to convert digital to analog and vice versa, but can be used to convert a digital signal to another digital video standard (for example, HDMI to DisplayPort).

Video converters work over short distances from the source to the destination: up to 15 feet or 3 meters.

Video extenders

Video extenders convert an input signal to a higher voltage for transmission over longer distances and then convert the input signal back to the original video standard. The input and the output signal will match on a video extender, as the same video standard is maintained end-to-end. If a cable is extended with adapters or converters, the signal quality degrades.

Note: For more information on using a video adapter or converter with a video extender, see the following FAQ: http://www.startech.com/faq/video_signal_converters_convert_then_extend.

If you need to use a video extender with a video adapter or converter, you should position the adapter or converter as close to the video source as possible. For example, if you need to take a VGA signal from a computer and send it 200 feet to an HDMI® projector, you should convert the signal from VGA to HDMI and use an HDMI extender.

Note: For more information on when to use cables or extenders, see the following FAQ: http://www.startech.com/faq/video_signal_converters_when_to_convert.

Yes, this video extender works with set-top boxes, provided the set-top box meets the following requirements:

  • The set-top box must be High-bandwidth Digital Content Protection (HDCP) compliant.
  • The set-top box must support devices being connected between the video source and display. If the set-top box requires a direct cable connection between the video source and display, it won't work with this video extender.

No, this device is designed to be a point-to-point solution using networking cabling only. 

This device outputs HDMI video signals. If you have a display or video destination that uses another type of video connection, there are ways that you can convert the video signal or connection. These options are outlined below and organized by the target connection.

HDCP

When you consider whether to convert an HDMI video signal to another connection type, it is important to know if the media that is being converted from the HDMI video connection is protected by High-bandwidth Digital Content Protection (HDCP). If the media is protected by HDCP, you cannot convert to analog video connections because they do not support HDCP. You may experience this issue when you use devices like Blu-ray players, DVD players, and certain gaming consoles.

Target connection Conversion
VGA HDMI to VGA: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=HDMI&filter_AVOUTPUT=VGA.
DVI

HDMI to DVI: https://www.startech.com/Cables/Audio-Video/HDMI/HDMI-to-DVI/.

DisplayPort HDMI to DisplayPort: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=HDMI&filter_AVOUTPUT=DisplayPort.

 

This device has an HDMI input port.  If you have a video source that uses another video connection, there are options available to convert the video signal or connection. These options will be outlined below for each video source connection.

Source Connection

Conversion

VGA

VGA to HDMI: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=VGA&filter_AVOUTPUT=HDMI.

DVI

DVI to HDMI video converters: https://www.startech.com/Cables/Audio-Video/Video-Adapter/HDMI-Cable-Adapters/.

DVI to HDMI video cables: https://www.startech.com/Cables/Audio-Video/HDMI/HDMI-to-DVI/.

DisplayPort

DisplayPort to HDMI passive converters: https://www.startech.com/AV/Displayport-Converters/DP-HDMI/?filter_CONVERTTYPE=Passive.

DisplayPort to HDMI active converters: https://www.startech.com/AV/Displayport-Converters/DP-HDMI/?filter_CONVERTTYPE=Active.

DisplayPort Passive and Active Conversions

The converter that you require depends on the type of DisplayPort video source that you are using. For more information about converting DisplayPort video signals, refer to the following FAQ: https://www.startech.com/faq/DisplayPort_Converter_DP_Multi_Mode.

Compliance and safety

Compliance letters

  • WEEE
    • Language: English
  • RoHS
    • Language: English

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

Customer Reviews

(3 reviews)
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(4 Stars)

It works without brackets.

By: Denis - 09/17/2018
Can't figure out the brackets installation. 2 units. 4 brackets, bunch of screws with round heads and flat heads.
| Helpful?
(1 Stars)

Works but.....

By: DanielERM - 04/17/2019
Purchased this the unpowered unit which did not work because of loss even though it was within the distance limitation. Support advised to purchase the powered unit .. did so and could only make it work over 25 foot direct patch cables. anything beyond that the unit fails to perform adequately even though direct patch cables of 40 feet were being used - this unit is supposed to support 50 meters
| Helpful?
Stefan, StarTech.com Support on 22/04/2019 8.25.58
Thank you for reviewing our ST121SHD50 HDMI extenders. We apologize they are not working well here. These unit should be able to support 50m as you mention, one thing to try while troubleshooting is the EQ dial on the receiver device. Trying each position for 10-12 seconds then trying the next until the best setting is found can help signal transmission and can improve performance and distance. If you are still experiencing issues please contact our support team available 24 hours a day 5 days a week by calling 1 800 265 1844, or clicking the Chat Live button in the top left of the site.
(5 Stars)

Excellent product

By: Teckdec - 11/08/2019
We use four of these to transmit a video signal over 100ft/30.2m Cat 6 utp cable. If you do not use the right category cable you will encounter issues. I found when i set it up in a lab for testing everything worked fine but when i installed it noise/interference from the building structure and other electrical cable were disturbing the video signal. You must use the correct Ethernet cable. It is supplied with one power supply which i use on the receiver unit. The HDMI input supplies power to the Transceiver. As per instructions, you need to play with the EQ setting on the receiver depending on the cable length.
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