8 Port VGA Video Extender over Cat 5
Extend and distribute a VGA signal to up to 8 displays over Cat5 cable
Product ID: ST1218T
The ST1218T 8 Port VGA Video Extender over Cat 5 is designed for use with our ST121 VGA over Cat 5 extension series, offering convenient VGA video distribution at distances of up to 492 feet (150 meters) using standard Cat 5 (or better) cabling.
Comprised of the transmitter unit only, the ST1218T requires one Receiver Unit (ST121R) per display that you are connecting.
For added versatility, the VGA over Cat 5 Repeater (ST121EXT) can be used to extend the distance between the transmitter and receiver by an additional 492-feet (150 meters), for a total distance of 984-feet (300 meters). Similarly, up to 3 repeater units can be used between transmitter and receiver, enabling you to connect monitors at each repeater, while still extending the total distance.
This product is TAA compliant and backed by a Startech.com 2-year warranty with free lifetime technical support.
The StarTech.com Advantage
- Cat 5 extension enables you to make use of existing Ethernet infrastructure wiring to extend VGA video
- A pure hardware design provides an easy installation and setup, with no software or drivers required
- Support for cascading multiple transmitter units, and the use of repeaters for additional distance, providing a scalable system for VGA distribution
Use a combination of repeaters or receivers to simplify adding more displays to your digital signage installation
Position displays where they will be most effective for viewing, but install the system equipment elsewhere in a clean and secure environment
Ideal for digital signage applications in financial, educational and corporate sectors to deliver up to date, eye-catching content
Expand the range of your advertisements in auditoriums, trade-shows and retail environments
|Cabling||Cat 5 UTP or better|
|Max Distance||150 m / 500 ft|
|Supported Resolutions||1600x1200 @ 150ft(50m)
1280x1024 @ 300ft(100m)
1024x768 @ 500ft(150m)
|Local Unit Connectors||1 - VGA (15 pin, High Density D-Sub) Male|
|2 - VGA (15 pin, High Density D-Sub) Female|
|8 - RJ-45 Female|
|Special Notes / Requirements|
|System and Cable Requirements||One Receiver Unit (ST121R) per display that you are connecting|
|Center Tip Polarity||Positive|
|Input Voltage||115V AC|
|Output Voltage||9 DC|
|Power Consumption (In Watts)||5.4|
|Power Source||AC Adapter Included|
|Shipping (Package) Weight||0.8 kg [1.7 lb]|
|What's in the Box|
|Included in Package||1 - 8 Port VGA Transmitter|
|1 - Power Adapter|
|1 - Instruction Manual|
Extend and Distribute a VGA Signal to 2 Displays over Cat5 Cable
Extend and distribute a VGA signal to up to 4 displays over Cat5 cable
Replace your lost or failed power adapter
Replace your lost or failed power adapter
Connect your VGA monitor with the highest quality connection available
Frequently Asked Questions
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 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 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 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.
No, this device is designed to be a point-to-point solution using networking cabling only.
This device outputs a VGA signal. 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.
|Target connection||First conversion||Second conversion (if required)|
|DVI-D||VGA to HDMI: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=VGA&filter_AVOUTPUT=HDMI.||HDMI to DVI-D: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=VGA&filter_AVOUTPUT=HDMI.|
|DVI-I||VGA to DVI-I: https://www.startech.com/Cables/Audio-Video/Video-Adapter/DVIVGA/.||N/A|
|DisplayPort||VGA to HDMI: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=VGA&filter_AVOUTPUT=HDMI.||HDMI to DisplayPort: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=HDMI&filter_AVOUTPUT=DisplayPort.|
Note: You might need to use more than one converter as part of your solution; however, you should try to use the least number of converters and cables to connect your source and destination. If you have the option to convert to multiple target video connections, choose the option that requires the fewest number of conversions.
DVI-I and DVI-D
When you convert from VGA to DVI, you need to know if you are converting to a DVI-I or a DVI-D connection. For more information about how to identify the type of connection that you need, refer to the following FAQ: https://www.startech.com/faq/video_signal_converters_dvi_interface.
You also need to know which form of DVI that you are using, because DVI-I supports both analog (VGA) and digital (HDMI) signals, while DVI-D only supports digital (HDMI) signals.
Note: Certain devices may have a DVI-I connection but only support DVI-D signaling. It is important to verify that your DVI-I device supports DVI-I signaling.
This device has a VGA 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.
DVI-I to VGA: https://www.startech.com/DVIVGAMFBK.
DisplayPort to VGA: https://www.startech.com/AV/Displayport-Converters/DP-VGA/.
DVI-I and DVI-D
When you convert from DVI to VGA, you need to know if you are converting from a DVI-I or a DVI-D connection. For more information about how to identify the type of connection that you have, refer to the following FAQ: https://www.startech.com/faq/video_signal_converters_dvi_interface.
You also need to know which form of DVI that you are using, because DVI-I supports both analog (VGA) and digital (HDMI) signals, while DVI-D only supports digital (HDMI) signals. Some DVI-I connections only support DVI-D signaling. In this case, you must use a DVI-D to VGA converter.
Compliance and Safety
- 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.