ST121 - Network switch StarTech.com - Free user manual and instructions

Product Type	Network Switch
Model	ST121
Dimensions	4.5 x 2.5 x 1.0 in (114 x 64 x 25 mm)
Weight	3.5 oz (100 g)
Power Supply	External adapter, 5V DC, 1A
Ports	5 x RJ-45 10/100/1000 Mbps
Auto-MDI/MDIX	Yes
Switching Capacity	10 Gbps
MAC Address Table	2K entries
Jumbo Frame Support	Yes (up to 9K)
LED Indicators	Power, Link/Activity per port
Operating Temperature	0°C to 40°C (32°F to 104°F)
Storage Temperature	-20°C to 70°C (-4°F to 158°F)
Housing	Metal
Mounting	Desktop or wall-mountable
Compliance	IEEE 802.3, 802.3u, 802.3ab
Safety Certifications	CE, FCC
Maintenance	Clean with soft dry cloth; disconnect power before cleaning
Repairability	No user-serviceable parts; contact StarTech.com support
General	Plug-and-play, no configuration required

Frequently Asked Questions - ST121 StarTech.com

How to set up the StarTech.com ST121 switch?

Simply connect the power adapter, then use standard Ethernet cables to connect your devices (e.g., router, computer) to any of the five ports. The switch works automatically with no configuration needed.

What is the maximum speed per port?

Each port supports speeds up to 1000 Mbps (Gigabit) with auto-negotiation for 10/100 Mbps devices.

Does the ST121 support Power over Ethernet (PoE)?

No, this switch does not support PoE. It only passes data; connected devices require their own power source.

Can I mount the switch on a wall?

Yes, the metal case includes keyhole slots for wall mounting. Use appropriate screws (not included).

How many devices can I connect?

You can connect up to five wired devices using the RJ-45 ports. Additional switches can be cascaded to expand the network.

Is the ST121 compatible with my router?

Yes, it works with any standard router, modem, or computer equipped with an Ethernet port. Supports all common network protocols.

What do the LED indicators mean?

The power LED lights solid when powered. Each port has a link/activity LED: solid green indicates a connection, blinking indicates data activity.

How to reset the switch to factory settings?

This switch has no reset button. To reset, simply power cycle: unplug the power adapter for a few seconds, then plug it back in.

Does the ST121 support VLANs?

No, this is an unmanaged switch and does not support VLAN configuration. All ports belong to the same broadcast domain.

How to clean the switch?

Disconnect power, then wipe the exterior with a soft, dry cloth. Do not use liquids, sprays, or abrasive cleaners.

USER MANUAL ST121 StarTech.com

HDMI® over CAT5 Video Extender with RS-232 and IR Control

ST121UTPHD2

Two black StarTech.com devices with visible ports and labels, no readable text beyond branding

*actual product may vary from photos

For the most up-to-date information, please visit: www.startech.com

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 off 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 different from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help.

Use of Trademarks, Registered Trademarks, and other Protected Names and Symbols

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.

Table of Contents

Introduction......1

Packaging Contents .... 1
System Requirements....1

Transmitter Unit 2

Receiver Unit....3

Preparing Your Site ....4

Hardware Installation....4

Specifications......6

Technical Support 7

Warranty Information....7

Introduction

The ST121UTPHD2 HDMI ^® over CAT5 Extender Kit can extend the audio and video signal output from an HDMI ^® -equipped device by up to 330 feet (100 Meters), over a single CAT5 cable. The extender supports full High-Definition video (1080p) and HD 3D, and also extends the accompanying digital audio signal.

For convenient, time-saving control of the media source, the CAT5 HDMI extender offers bidirectional RS-232 serial and unidirectional Infrared (IR) interfaces, which enable you to control the HDMI audio-video source from either end of the connection.

The HDMI over CAT5 Extender Kit includes both the HDMI ^® to CAT5 transmitter and the CAT5 to HDMI receiver needed for a cost-effective, ready-to-use digital signage solution.

To help ensure seamless performance without any unexpected or unnecessary interruptions, the HDMI Ethernet transmitter and receiver units are fully compliant with High Speed HDMI® and HDCP standards, and each unit features lockable power connectors to prevent accidental disconnections.

The ST121UTPHD2 HDMI over CAT5 Extender Kit is backed by a StarTech.com 2-year warranty and free lifetime technical support.

Packaging Contents

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

System Requirements

• HDMI® enabled video source device (i.e. computer, Blu-ray Player)
• HDMI® enabled display device (i.e. television, projector)
  • Available AC electrical outlet for transmitter and receiver
• HDMI® cable from receiver to display (HDMI® cable from video source to transmitter is provided)

Transmitter Unit

Receiver Unit

FRONT

REAR

Preparing Your Site

1. Determine where the local video source (i.e. computer, Blu-ray Player) will be located and set up the device.
2. Determine where the remote display will be located and place/mount the display appropriately.

Notes: Ensure the Extender Unit and the Receiver Unit are situated near an available AC electrical outlet. Make sure all devices are turned off before beginning installation.

Hardware Installation

1. Install Transmitter Unit

a) Position the Transmitter Unit near the video source (i.e. Computer, Blu-ray Player).
b) Connect the provided HDMI® cable from the video source device (i.e. computer, Blu-ray Player) to the "HDMI® IN" on the Transmitter Unit.
c) Connect the provided Transmitter Unit power supply.
d) (Optional) If using the ST121UTPHD2 to extend an infrared (IR) device signal. Connect the IR Transmitter Cable to the IR OUT on the Transmitter Unit, and Position the extended IR sensor directly in front of the video source's IR sensor. Check the manual of your video source device for the IR sensor location.
e) (Optional) If you would like to use a local display, connect an HDMI® cable (Not provided) from the display to HDMI® bypass.

Note: Only the local or remote display can work at one time. Connecting a display to the HDMI® bypass will result in the remote display losing signal.

f) (Optional) If also transmitting RS-232 signals over CAT5, connect the transmitting RS-232 device to the "RS-232" connector on the Transmitter Unit using a DB9 cable (Not included).

1. Install RJ45 terminated CAT5 Ethernet Cable

a) Connect an RJ45 terminated CAT5 Ethernet cable (not included) to the RJ45 connector on the Transmitter unit.

Note: If you are using surface cabling, ensure you have enough Category 5 unshielded twisted pair (UTP) network cabling to connect the Host Unit to the Remote Unit's location, and that each end is terminated with a RJ45 connector. The cabling should not go through any networking equipment (i.e. router, switch).

OR

If you are using premises cabling, ensure that the Category 5 unshielded twisted pair (UTP) network cabling between the Host Unit and the Remote Unit has been properly terminated in a wall outlet in each location and there is a patch cable long enough to connect the Remote Unit and the Host Unit to their respective outlets. The cabling should not go through any networking equipment (i.e. router, switch).

b) Connect the other end of the CAT5 cable run to the RJ45 connector on the Receiver Unit.

1. Install Receiver Unit

a) Position the Receiver Unit near the video display (i.e. television, projector).
b) Connect the video source to the HDMI ^® OUT on the Receiver Unit using an HDMI ^® cable (Not included).
c) (Optional) If using the ST121UTPHD2 to extend an infrared (IR) device signal. Connect the IR Receiver Cable to the IR IN 1 on the Receiver Unit, and Position the IR sensor where the remote control will point.

Note: If you intend to point the remote control directly at the Receiver Unit, the IR Receiver cable is not required, as IR IN 2 is physically embedded into the device.

g) (Optional) If also transmitting RS-232 signals over CAT5, connect the receiving RS-232 device to the "RS-232" connector on the Receiver Unit using a DB9 cable (Not included).
d) Connect the provided Receiver Unit power supply. The Power LED will light, and LINK & HDCP LEDs will turn on after a successful connection between both units is established. This may take several seconds.

1. Your source video image will now appear on the remote video display.

Specifications

Local Unit Connectors	1x IrDA (Infrared; SIR/FIR)2x HDMI (19 pin) Female1x DB-9 (9 pin; D-Sub) Female1x RJ-45 Female
Remote Unit Connectors	2x IrDA (Infrared; SIR/FIR)1x HDMI (19 pin) Female1x DB-9 (9 pin; D-Sub) Male1x RJ-45 Female
Maximum Data Transfer Rate	HDMI® - 3.4GbpsRS-232 - 115200bps baud
Max Distance 100 m / 330 ft
Maximum Digital Resolutions 4K @ 30Hz
Wide Screen Supported Yes
Audio Specifications Supports Dolby® TrueHD, DTS-HD MA
General Specifications	IR Interface: unidirectional38Khz / ±10° / 5M

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.

In addition, 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 officers, directors, employees or agents) for any damages (whether direct or indirect, special, punitive, incidental, consequential, or otherwise), loss of profits, 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.

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