
Quick-start guide
4-Port HDMI Video Splitter - 4K at 60Hz
ST124HD20
DE: Bedienungsanleitung - de.startech.com
FR: Guide de l'utilisateur - fr.startech.com
ES: Guía del usuario - es.startech.com
IT: Guida per l'uso - it.startech.com
NL: Gebruiksaanwijzing - nl.startech.com
PT: Guia do usuário - pt.startech.com
Packaging contents
• 1 x HDMI® video splitter
• 1 x universal power adapter (NA, EU, UK, ANZ)
• 1 x quick-start guide
System requirements
• One HDMI video source device with cabling.
• Four HDMI video display devices with cabling.
Product overview
Front view
Input
LED
Power
LED
Rear view
Output
LEDs
USB
service
port
EDID
switch
About this product
This HDMI video splitter lets you connect an HDMI video source to
four HDMI video displays, with support for Ultra HD resolutions up to
4K at 60Hz and 7.1 surround sound audio.
Hardware installation
Note: Before you begin the hardware installation steps, ensure
your HDMI source device and each of the HDMI video displays are
powered o.
1. Connect an HDMI cable (sold separately) to the HDMI input on
the video splitter and to the HDMI output on your video source
device.
2. Connect an HDMI cable (sold separately) to each of the HDMI
outputs on the video splitter and to the HDMI input ports on your
video displays.
Note: Connect the HDMI display with the lowest resolution and
refresh rate capability to output #1.
3. Connect the power adapter (included) to the DC 5V power
adapter port on the video splitter and to an AC outlet.
HDMI
output 4
HDMI
output 3
For the latest information, technical specications, and support for
this product, please visit www.startech.com/ST124HD20
HDMI
input
HDMI
output 2
HDMI
output 1
DC 5V power
adapter port
*actual product may vary from photos
4. Power on your video source.
5. Power on each of your video displays.
6. Verify your video source is now displaying on each of your
displays.
Manual Revision: 02/28/2017

EDID switch
When connected, EDID information (such as the resolution and
refresh rate) is shared between the video source and the displays, to
determine which output settings are optimal for the display.
Because this splitter enables you to connect four displays to a single
video source, it’s possible that each display may have dierent
capabilities, which can negatively aect the performance of the
display with lower capabilities.
To ensure optimal support for both displays, this HDMI
splitter features an EDID switch that gives you the option
to use the EDID settings from the display that’s attached
to HDMI Output 1, or emulate generic EDID settings
that are commonly supported by most HDMI displays.
LED indicators
This video splitter features LED indicators that can be used
to notify you of the video status. The following table explains
what each LED represents:
LED Status
Power LED
Input LED
Output LEDs
Lights when the splitter is connected to a
power source.
Lights when an active video source is
connected to the HDMI input.
Lights when an active video display is
connected to the designated HDMI output.
FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment o and on, the user is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation. Changes or modications not expressly approved by StarTech.com could void the user’s authority to operate the
equipment.
Industry Canada Statement
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe [B] est conforme à la norme NMB-003 du Canada.
CAN ICES-3 (B)/NMB-3(B)
Use of Trademarks, Registered Trademarks, and other Protected Names and Symbols
HDMI is a trademark of HDMI Licensing, LLC. This manual may make reference to trademarks, registered trademarks, and other protected names and/or symbols of third-party companies not related
in any way to StarTech.com. Where they occur these references are for illustrative purposes only and do not represent an endorsement of a product or service by StarTech.com, or an endorsement
of the product(s) to which this manual applies by the third-party company in question. Regardless of any direct acknowledgement elsewhere in the body of this document, StarTech.com hereby
acknowledges that all trademarks, registered trademarks, service marks, and other protected names and/or symbols contained in this manual and related documents are the property of their respective
holders.
Technical Support
StarTech.com’s lifetime technical support is an integral part of our commitment to provide industry-leading solutions. If you ever need help with your product, visit www.startech.com/support and
access our comprehensive selection of online tools, documentation, and downloads.
For the latest drivers/software, please visit www.startech.com/downloads
Warranty Information
This product is backed by a two year warranty.
StarTech.com warrants its products against defects in materials and workmanship for the periods noted, following the initial date of purchase. During this period, the products may be returned for
repair, or replacement with equivalent products at our discretion. The warranty covers parts and labor costs only. StarTech.com does not warrant its products from defects or damages arising from
misuse, abuse, alteration, or normal wear and tear.
Limitation of Liability
In no event shall the liability of StarTech.com Ltd. and StarTech.com USA LLP (or their ocers, directors, employees or agents) for any damages (whether direct or indirect, special, punitive, incidental,
consequential, or otherwise), loss of prots, loss of business, or any pecuniary loss, arising out of or related to the use of the product exceed the actual price paid for the product. Some states do not
allow the exclusion or limitation of incidental or consequential damages. If such laws apply, the limitations or exclusions contained in this statement may not apply to you.