# HDMI over CAT6 Extender with 4-port USB Hub StarTech ST121USBHD — AV transmitter & receiver, 50 m, 1080p

**URL:** https://aio.lv/en/product--startech-st121usbhd--294361
**Data updated:** 2026-04-08 22:11 (EEST)
**Category:** Audio & Video Extenders
**Manufacturer:** StarTech
**Manufacturer code:** ST121USBHD
**EAN:** 0065030862363
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 323.99 €
**Prices and availability valid until:** 2026-07-09 23:59
**Price without VAT (21%):** 267.76 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--startech-st121usbhd--294361

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

AV transmitter and receiver kit StarTech ST121USBHD extends HDMI signals up to 50 m (165 ft) over Cat5/5e/6 cabling while supporting 1080p resolution. The set includes a 4‑port USB hub with Mini‑USB B and USB Type‑A connectivity for peripheral sharing. Wired connectivity, 5V operating voltage, 1A output current, typical power 5W. Compact black units suitable for digital signage, conference rooms and remote workstation setups.

## Long description

The StarTech.com HDMI over CAT6 Extender with 4-port USB Hub lets you extend an HDMI video source and four USB peripheral devices to a remote display up to 165 ft (50 m) away using shielded CAT6 cable. It supports up to 1080p (and uncompressed 1920x1200) video and preserves 7.1 digital audio, providing a wired connection between source and remote display while offering local USB access at the display end.
Advantages
This extender maintains high-definition picture quality and multi-channel digital audio over long distances, includes a built-in 4-port USB 2.0 hub for remote peripheral connection and control, and offers plug-and-play installation with automatic EDID passthrough and video equalization. Mounting hardware is included for a tidy installation and the unit is TAA compliant with a 2-year manufacturer warranty.
Suitable for
Digital signage in retail environments and shopping centers
Hospital patient information displays and waiting areas
Point-of-sale kiosks and touchscreen interfaces requiring remote USB control
Extending media playback from a central AV rack to remote screens
When it may not be suitable
This extender requires shielded CAT6 cabling to reach the maximum 50 m distance; using unshielded CAT6 reduces the maximum reach to 30 m and CAT5 to 15 m. It is designed for wired installations and is not suitable where a wireless solution or longer-than-specified distances without repeaters/signal boosters are needed.
Key specifications
Video resolutions supported: up to 1920x1200 or 1080p
Maximum transfer distance: 50 m (using shielded CAT6)
Cable types supported: Cat6, Cat5e, Cat5 (performance depends on cable shielding)
USB: 4 × USB 2.0 ports (remote hub)
Connectivity: wired HDMI extension over RJ-45 cabling
Power: 5 V operating voltage, typical power consumption 5 W, output current 1 A
Dimensions (module): 82 mm × 82 mm × 21 mm; weight: 0.46 kg
How to use
Connect the HDMI output of your source device to the transmitter unit and run shielded CAT6 cable between the transmitter and receiver located at the remote display. Plug the remote display into the receiver’s HDMI output. Connect up to four USB peripherals at the display end to the built-in USB 2.0 hub to enable remote access and control of those devices or the source. Power both units with the supplied adapters and allow the extender to pass EDID information automatically; no additional drivers or software are required for standard operation.
What to consider before purchase
Use shielded CAT6 cable to achieve the full 50 m distance; unshielded CAT6 and CAT5 reduce range
Ensure connected USB devices are compatible with USB 2.0 hub performance and power limits
Confirm required video resolution (up to 1080p / 1920x1200) meets your display needs
Usage recommendations
For reliable performance, install shielded CAT6 cable in conduit where possible, keep cable runs away from large electrical sources, and verify EDID settings if using nonstandard displays or video modes.

## Specifications

### Technical details

| Feature | Value |
|---|---|
| Audio support | Yes |
| Compliance certificates | RoHS |

### Ports & interfaces

| Feature | Value |
|---|---|
| HDMI in | 1 |
| Number of HDMI outputs | 1 |
| RJ-45 input ports | 2 |
| RJ-45 output ports | 2 |
| USB connector type | Mini-USB B, USB Type-A |
| USB ports quantity | 7 |
| Connectivity technology | Wired |

### Power

| Feature | Value |
|---|---|
| Power consumption (typical) | 5 W |
| External power adapter | Yes |
| Output current | 1 A |
| Operating voltage | 5 V |
| Power plug type | Type N |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.46 kg |
| Height | 21 mm |
| Width | 82 mm |
| Depth | 82 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 0 - 80 |
| Storage temperature (T-T) | -10 - 60 |
| Operating temperature (T-T) | 0 - 40 |

### Packaging data

| Feature | Value |
|---|---|
| Package dimensions (WxDxH) | 175 x 306 x 74 |
| Package weight | 1067 g |
| Package depth | 180 mm |
| Package height | 71 mm |
| Package width | 309 mm |

### Packaging content

| Feature | Value |
|---|---|
| AC adapter included | Yes |
| Cables included | USB, LAN (RJ-45) |
| Quick start guide | Yes |

### Features

| Feature | Value |
|---|---|
| Type | AV transmitter & receiver |
| Cable types supported | Cat6, Cat5e, Cat5 |
| Maximum transfer distance | 50 m |
| Certification | CE, FCC, TAA, REACH |
| Colour depth | 48 bit |
| Product colour | Black |
| Supported video modes | 1080p |
| Maximum refresh rate | 60 Hz |
| Carrier frequency | 38 kHz |

## FAQ

### How much does the StarTech ST121USBHD HDMI over CAT6 Extender 50 m cost, and is it available for purchase?

The price is 323.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 03.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can StarTech ST121USBHD HDMI over CAT6 Extender 50 m be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All StarTech products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized StarTech service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: hdmi in, number of hdmi outputs, rj-45 input ports, rj-45 output ports, weight, type, maximum transfer distance, cable types supported, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for StarTech ST121USBHD HDMI over CAT6 Extender 50 m?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/294361/65766501_large.webp