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StarTech.com ST121USBHD HDMI over CAT6 Extender with 4-port USB Hub - 165 ft (50m) - 1080p/1920 x 1200
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Product Features
Technical Overview
This wired connectivity solution uses CAT5e or CAT6 Ethernet cable as the extension medium, supporting maximum operating distances of 260 feet (79 meters) while maintaining signal integrity. The system features dedicated HDMI input and output ports on both transmitter and receiver units, with four RJ-45 network ports for cable connection and five total USB ports—four for peripheral expansion and one for service connectivity.
Video performance includes support for WUXGA (1920x1200) graphics modes and 1080p HD resolution, ensuring compatibility with modern displays and content sources. The compact transmitter and receiver units measure 3.20" × 3.20" × 0.80" (81.28 × 81.28 × 20.32 mm) each and weigh approximately 1.01 lb (460 g), designed for discreet placement in equipment racks, behind displays, or under desks.
Relevant factors for this section include Connectivity Technology, Number of Input Devices Supported, Number of Output Devices Supported, Graphics Modes. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Key Product Advantages
The ST121USBHD combines video extension with peripheral connectivity in a single integrated solution, reducing cable clutter and equipment requirements for extended AV setups. Unlike basic HDMI extenders, this system includes a functional USB hub that maintains peripheral responsiveness across the extended distance, supporting simultaneous operation of multiple devices.
Complete Extension Kit
Includes both transmitter and receiver units with all necessary cables and mounting hardware for immediate deployment.
- HDMI over CAT6 transmitter
- HDMI over CAT6 receiver
- 2 Ethernet cables
- 2 USB to Mini-USB cables
- Universal power adapter
- Mounting kit
- Quick install guide
Professional Installation Features
Designed for permanent installations with included mounting hardware and compact form factors that fit standard equipment spaces.
- Mounting kit included
- Compact 3.2" square footprint
- Low-profile 0.8" height
- Rack or surface mount options
Deployment / Use Cases
This extender kit is ideal for scenarios where source equipment must be located remotely from displays while maintaining peripheral connectivity. Common applications include digital signage deployments where media players are secured in equipment rooms while displays are mounted in public areas, conference room setups with table-based computers connecting to wall-mounted displays, and classroom installations where instructor stations connect to multiple displays throughout the learning space.
The system also supports retail environments where point-of-sale systems connect to customer-facing displays, healthcare facilities requiring medical imaging extensions, and residential home theater installations with equipment racks in separate rooms. The USB hub functionality makes it particularly valuable for kiosk applications, interactive displays, and any setup requiring extended peripheral operation alongside video extension.
What's in the Box
The kit includes all components necessary for immediate deployment and installation.
Highlights
- Extends HDMI video and USB peripherals up to 165 ft (50m) over CAT5e/CAT6 cable
- Built-in 4-port USB 2.0 hub for remote peripheral operation
- Supports 1080p and 1920×1200 (WUXGA) video resolutions
- Includes both transmitter and receiver units in complete kit
- Comes with mounting hardware for professional installation
- Universal power adapter supports NA, EU, UK, and AU outlets
- TAA compliant for government and educational procurement
- RoHS, REACH, and WEEE environmental compliance
- 2-year limited warranty from StarTech.com
- Compact 3.2" square design for discreet placement
Specifications
| Specifications | |
|---|---|
| Manufacturer | StarTech.com |
| Manufacturer Part Number | ST121USBHD |
| Brand Name | StarTech.com |
| Product Name | HDMI over CAT6 Extender with 4-port USB Hub - 165 ft (50m) - 1080p |
| Packaged Quantity | 1 Kit |
| Product Type | Video Extender Transmitter/Receiver |
| Technical Information | |
| Connectivity Technology | Wired |
| Number of Input Devices Supported | 1 |
| Number of Output Devices Supported | 1 |
| Maximum Operating Distance | 260 ft (79248 mm) |
| Video | |
| Graphics Modes | WUXGA |
| Maximum Video Resolution | 1920 x 1200 |
| Interfaces/Ports | |
| Network (RJ-45) | Yes |
| HDMI In | Yes |
| HDMI Out | Yes |
| USB | Yes |
| Number of Network (RJ-45) Ports | 4 |
| Number of USB Ports | 5 |
| Number of HDMI Inputs | 1 |
| Number of HDMI Outputs | 1 |
| Media & Performance | |
| Media Type Supported | Twisted Pair |
| Twisted Pair Cable Standard | Category 6 |
| Physical Characteristics | |
| Transmitter Height | 0.80" (20.32 mm) |
| Transmitter Width | 3.20" (81.28 mm) |
| Transmitter Depth | 3.20" (81.28 mm) |
| Receiver Height | 0.80" (20.32 mm) |
| Receiver Width | 3.20" (81.28 mm) |
| Receiver Depth | 3.20" (81.28 mm) |
| Transmitter Weight (Approximate) | 1.01 lb (460 g) |
| Receiver Weight (Approximate) | 1.01 lb (460 g) |
| Miscellaneous | |
| Package Contents | 1 x HDMI over CAT6 Transmitter 1 x HDMI over CAT6 Receiver 2 x Ethernet Cables 2 x USB to Mini-USB Cables 1 X Universal Power Adapter (NA/EU/UK/AU) 1 x Mounting Kit 1 X Quick Install Guide |
| Country of Origin | Taiwan |
| TAA Compliant | Yes |
| Environmentally Friendly | Yes |
| Environmental Certification | EU RoHS |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS) 2,Registration, Evaluation, Authorization and Restriction of Chemicals (REACH),Waste Electrical and Electronic Equipment Directive (WEEE) |
| Warranty | |
| Limited Warranty | 2 Year |
User Manual
FAQ
What is the maximum distance this HDMI extender can cover?
The ST121USBHD supports maximum operating distances up to 260 feet (79 meters) over CAT5e or CAT6 Ethernet cable, with reliable performance for typical installations at 165 feet (50 meters). This extended range allows placement of source equipment in separate rooms, equipment closets, or secured areas while maintaining video and USB connectivity to displays and peripherals in the target location.
Does this extender support 4K video resolution?
No, this extender supports maximum video resolutions of 1920×1200 (WUXGA) or 1080p HD. It is designed for standard high-definition applications rather than 4K Ultra HD content. For 4K extension requirements, consider StarTech.com's 4K-capable HDMI over CAT6 extender models with appropriate specifications for higher-resolution signals.
Can I connect multiple USB devices through this extender?
Yes, the built-in 4-port USB 2.0 hub allows connection of up to four peripheral devices simultaneously, such as keyboards, mice, webcams, flash drives, or external storage. The hub maintains connectivity across the extended distance, enabling full remote operation of USB devices alongside the extended HDMI video signal.
What type of cable do I need for installation?
The extender uses standard CAT5e or CAT6 Ethernet cable (twisted pair) for the connection between transmitter and receiver units. The kit includes two Ethernet cables to get started, but longer runs require separately purchased CAT5e/CAT6 cable of appropriate length. Both solid and stranded core cables are supported for permanent and temporary installations respectively.
Is this extender compatible with existing HDMI equipment?
Yes, the ST121USBHD features standard HDMI ports that connect directly to HDMI outputs from sources like computers, media players, gaming consoles, and set-top boxes, and to HDMI inputs on displays, projectors, and monitors. No special drivers or software are required—the system functions as a transparent extension of existing HDMI and USB connections.
What warranty coverage does this product include?
StarTech.com provides a 2-year limited warranty on the ST121USBHD HDMI over CAT6 Extender with 4-port USB Hub. This warranty covers defects in materials and workmanship under normal use. The product is also TAA compliant for government and educational procurement, and meets RoHS, REACH, and WEEE environmental standards for responsible manufacturing and disposal.
| Qty | Price | Available |
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