USB3-EX2H330R-K Overview and Use Cases

What Is the USB3-EX2H330R-K?

The OREI USB3-EX2H330R-K is a USB 3.2 Gen 1 extender with dual HDMI output that extends USB signals and HDMI video up to 328ft / 100m over a single CAT6a cable. It supports USB 3.2 Gen 1 and USB 2.0 devices, with data transfer rates up to 5Gbps.

The kit includes one Transmitter, one Receiver, two 4-pin 3.5mm Phoenix connectors, mounting ears, machine screws, one power adapter, and a user manual. The host computer or laptop connects to one of the USB-C HOST ports on the Transmitter. USB peripherals connect to the USB-A device ports on the Transmitter and the USB-A / USB-C device ports on the Receiver. HDMI displays connect to HDMI OUT 1 and HDMI OUT 2 on the Receiver. A CAT6a cable connects the Transmitter and Receiver through the HDBT-USB3 ports.

The USB3-EX2H330R-K supports selectable dual USB-C host ports, auto switching, manual switching, dual HDMI output up to 4K@60Hz, audio de-embedding through a 3.5mm audio output, RS-232 pass-through, FSYNC pass-through, bi-directional 24V PoC, plug and play installation, and driver-free operation.

The USB3-EX2H330R-K is useful for USB cameras, webcams, PTZ cameras, microphones, keyboards, mice, USB drives, printers, scanners, touch panels, dual-monitor workstations, conference rooms, classrooms, commercial AV setups, industrial applications, and professional USB + HDMI extension applications.

IMPORTANT — USB3-EX2H330R-K Extends USB and Dual HDMI

The USB3-EX2H330R-K extends USB signals and provides dual HDMI output at the Receiver side.

This product is designed for USB peripheral extension and HDMI output over a single CAT6a cable.

IMPORTANT — Extends up to 328ft / 100m Over CAT6a

The USB3-EX2H330R-K extends signals up to 328ft / 100m over CAT6a cable.

For best performance, use high-quality CAT6a F/FTP cable.

Poor CAT cable, weak terminations, damaged connectors, couplers, wall plates, patch panels, or low-quality cable may cause USB dropouts, display issues, unstable HDMI output, device detection issues, or link failure.

IMPORTANT — Supports USB 3.2 Gen 1 up to 5Gbps

The USB3-EX2H330R-K supports USB 3.2 Gen 1 data transmission.

To get USB 3.2 performance, the host computer, USB cable, connected device, CAT6a cable, and extender connection must all support the required signal quality.

IMPORTANT — Dual HDMI Output Is Supported

The Receiver includes two HDMI output ports.

The manual lists dual HDMI output ports supporting resolutions up to 4K@60Hz.

To get 4K@60Hz, the host device, connected display, HDMI cable, CAT6a cable, and source output settings must support the required signal.

IMPORTANT — Dual USB-C Host Switching Is Supported

The Transmitter includes two USB-C host ports.

The two USB-C host ports support auto switching and manual switching. This allows connected USB peripherals and connected outputs to be used with the selected host device.

IMPORTANT — Auto and Manual Switching Are Supported

The USB3-EX2H330R-K supports both automatic source detection and manual host switching.

Use manual switching when both host devices are connected and you want to choose which computer controls the connected USB devices.

IMPORTANT — USB Device Ports Are Available on Both Transmitter and Receiver

The Transmitter and Receiver both include USB device ports.

Common USB devices include:

• Keyboard
• Mouse
• USB drive
• Webcam
• USB camera
• PTZ camera
• Microphone
• Speaker
• Printer
• Scanner
• Touch panel
• USB control device

IMPORTANT — USB Device Port Power Limits

The USB device ports provide different power levels.

If a high-power USB device such as an external hard drive or SSD does not work properly, try unplugging it or using a separately powered USB device.

IMPORTANT — Audio De-Embedding Is Supported

The Receiver includes a 3.5mm audio output.

This provides audio de-embedding for convenient connection to sound systems or amplifiers.

IMPORTANT — Bi-Directional 24V PoC Is Supported

The USB3-EX2H330R-K supports bi-directional 24V Power over Cable.

Power can be supplied from either the Transmitter or Receiver side, simplifying installation.

IMPORTANT — RS-232 Pass-Through Is Supported

The USB3-EX2H330R-K supports RS-232 pass-through and RS-232 command control.

The RS-232 port can be connected to a PC, laptop, or third-party control system using the Phoenix connector.

IMPORTANT — FSYNC Pass-Through Is Supported

The USB3-EX2H330R-K includes FSYNC pass-through.

FSYNC is useful when connected devices need to stay synchronized on both ends of the extender.

Ports and Panel Layout

Step-by-Step Setup

1. Connect a computer or laptop to HOST 1 on the Transmitter using USB-C.
2. If using a second host computer, connect it to HOST 2 on the Transmitter using USB-C.
3. Connect CAT6a cable from HDBT-USB3 on the Transmitter to HDBT-USB3 on the Receiver.
4. Connect the included DC 24V/3.75A power adapter to either the Transmitter or Receiver.
5. Connect HDMI displays to HDMI OUT 1 and HDMI OUT 2 on the Receiver.
6. Connect USB peripherals to the Transmitter USB device ports if local USB devices are needed.
7. Connect USB peripherals to the Receiver USB-A or USB-C device ports if remote USB devices are needed.
8. If using audio de-embedding, connect headphones, speakers, soundbar, amplifier, or audio device to AUDIO OUT on the Receiver.
9. If using manual switching, press the HOST switch button to select HOST 1 or HOST 2.
10. If using auto switching, connect the active host and allow the unit to detect the USB host signal.
11. If using RS-232, connect the RS-232 port to a PC, laptop, or control system.
12. If using FSYNC, connect the sync / trigger wiring between the required external devices.
13. Check the POWER LED on the powered unit.
14. Check that the LINK LED is on.
15. Check the USB LED status.
16. Test the connected USB devices, HDMI displays, and audio output.

CAT Cable Requirement — Critical

Use high-quality CAT6a F/FTP cable.

Poor CAT cable may cause:

• No link
• USB devices not detected
• USB 3.0 signal not detected
• USB LED off
• USB speed dropping
• Device disconnects
• Webcam freezing
• Camera dropouts
• HDMI output not working
• Display flickering
• External drive not working
• RS-232 pass-through issues
• PoC power issues

Use direct, properly terminated cable whenever possible.

HDMI Cable Requirement — Critical

Use high-quality HDMI cables for the Receiver HDMI outputs.

Poor HDMI cables may cause:

• No picture
• Flickering
• Black screen
• Display not detected
• 4K@60Hz not working
• Audio output issues
• HDMI handshake issues

For 4K@60Hz, use HDMI cables rated for 18Gbps.

For troubleshooting, test the HDMI display directly with the host device before using the extender.

USB Cable Requirement — Critical

Use high-quality USB cables for host and device connections.

Poor USB cables may cause:

• USB device not detected
• Device disconnects
• USB 3.0 speed not available
• Webcam freezing
• Microphone dropouts
• Keyboard or mouse issues
• External storage issues

For troubleshooting, test the USB device directly with the computer before using the extender.

Power Requirement — Critical

The USB3-EX2H330R-K uses one DC 24V/3.75A power adapter and supports bi-directional PoC.

Power can be supplied from either the Transmitter or Receiver side.

If the system does not power on, check the power adapter, DC 24V input, CAT6a cable, and PoC connection.

Understanding the Transmitter

The Transmitter is installed near the host computer or computers.

It has:

• Two USB-C host ports
• Two USB-A device ports
• HOST switch button
• HOST 1 / HOST 2 LEDs
• POWER LED
• LINK LED
• USB LED
• SERVICE port
• DC 24V input
• HDBT-USB3 port
• RS-232 port
• FSYNC port

The Transmitter connects to one or two host computers and sends USB data and system signals over CAT6a cable to the Receiver.

Understanding the Receiver

The Receiver is installed near the displays and remote USB devices.

It has:

• Two HDMI outputs
• AUDIO OUT
• Two USB-C device ports
• Two USB-A device ports
• POWER LED
• LINK LED
• USB LED
• SERVICE port
• DC 24V input
• HDBT-USB3 port
• RS-232 port
• FSYNC port

The Receiver provides remote USB access, dual HDMI display output, and 3.5mm audio output.

Understanding the Application Example

The application diagram shows a host computer connected to the Transmitter. A CAT6a cable connects the Transmitter to the Receiver. USB devices such as a mouse, keyboard, microphone, USB camera, USB drive, and speakers are connected across the system. The Receiver connects to Monitor 1 and Monitor 2 using HDMI and also connects to 2.0 speakers through the audio output.

This shows the main use case: extending USB peripherals and dual HDMI display output over a long distance using one CAT6a cable.

Understanding LED Indicators

Use these LEDs first when troubleshooting USB signal, link, or host switching issues.

Supported USB, HDMI, and Control Features

The USB3-EX2H330R-K supports:

Supported Technical Specifications

What Host Devices Is the USB3-EX2H330R-K Compatible With?

The USB3-EX2H330R-K can connect to host devices such as:

• Desktop PCs
• Laptops
• Workstations
• Conference room PCs
• Classroom computers
• Control room computers
• Industrial computers
• Commercial AV systems

The host device must support connection through the USB-C host port.

What USB Devices Is the USB3-EX2H330R-K Compatible With?

The USB3-EX2H330R-K can connect to USB devices such as:

• USB drives
• Webcams
• USB cameras
• PTZ cameras
• Keyboards
• Mice
• Microphones
• Speakers
• Printers
• Scanners
• Touch panels
• USB control devices
• USB security cameras

High-power USB devices such as external hard drives or SSDs may require additional troubleshooting or separate power.

What Displays Is the USB3-EX2H330R-K Compatible With?

The USB3-EX2H330R-K can connect to HDMI displays such as:

• 4K monitors
• 1080p monitors
• 4K TVs
• 1080p TVs
• Projectors
• Conference room displays
• Classroom displays
• Commercial displays
• Dual-monitor workstations

For 4K@60Hz, the connected display must support 4K@60Hz input.

Frequently Asked Questions

Q: What is the OREI USB3-EX2H330R-K used for? 
A: It is used to extend USB 3.2 Gen 1 signals, USB peripherals, and dual HDMI output up to 328ft / 100m over CAT6a cable.

Q: Does the USB3-EX2H330R-K extend HDMI video? 
A: Yes. The Receiver includes two HDMI output ports that support up to 4K@60Hz.

Q: What USB version does it support? 
A: It supports USB 3.2 Gen 1 and USB 2.0 compatible devices.

Q: What is the maximum transfer rate? 
A: It supports data transfer rates up to 5Gbps.

Q: How far can it extend USB and HDMI? 
A: It extends signals up to 328ft / 100m over CAT6a cable.

Q: What CAT cable should I use? 
A: Use CAT6a F/FTP cable.

Q: Can I connect it through a network switch? 
A: No. It requires a direct CAT cable connection between the Transmitter and Receiver.

Q: Is this AV over IP? 
A: No. It is a direct extender over CAT cable.

Q: Does it need drivers? 
A: No. It is plug and play and does not require drivers.

Q: How many host computers can I connect? 
A: You can connect up to two host computers using the two USB-C host ports on the Transmitter.

Q: Can I switch between two computers? 
A: Yes. It supports auto switching and manual switching between HOST 1 and HOST 2.

Q: How do I manually switch hosts? 
A: Press the HOST switch button on the Transmitter to switch between HOST 1 and HOST 2.

Q: Does it support auto switching? 
A: Yes. It supports automatic host switching based on USB 5V detection.

Q: How many HDMI displays can I connect? 
A: You can connect two HDMI displays to HDMI OUT 1 and HDMI OUT 2 on the Receiver.

Q: Does it support 4K@60Hz? 
A: Yes. The manual lists HDMI output support up to 4K@60Hz.

Q: Does it support audio output? 
A: Yes. The Receiver includes a 3.5mm AUDIO OUT port for audio de-embedding.

Q: What audio devices can I connect? 
A: You can connect headphones, speakers, soundbars, amplifiers, or other 3.5mm audio devices.

Q: What USB devices can I connect? 
A: You can connect USB drives, webcams, keyboards, mice, microphones, speakers, USB cameras, printers, scanners, touch panels, and other USB peripherals.

Q: Can I access USB security cameras through this device? 
A: Yes. If the security cameras work over USB, they can be accessed through this extender.

Q: Does it support USB cameras or PTZ cameras? 
A: Yes. It supports USB cameras, webcams, and PTZ cameras that operate over USB.

Q: Does it support Power over Cable? 
A: Yes. It supports bi-directional 24V PoC.

Q: Can I power it from the Transmitter side? 
A: Yes. Power can be supplied from the Transmitter side.

Q: Can I power it from the Receiver side? 
A: Yes. Power can also be supplied from the Receiver side.

Q: What power adapter does it use? 
A: It uses a DC 24V/3.75A power adapter.

Q: Do both units need separate power adapters? 
A: No. The system supports bi-directional PoC, so one power adapter can power the setup.

Q: Does it support RS-232? 
A: Yes. It supports RS-232 pass-through and RS-232 command control.

Q: What is the default RS-232 baud rate? 
A: The manual lists 115200 as the default baud rate.

Q: Does it support FSYNC? 
A: Yes. It supports FSYNC pass-through for 0–5V trigger or sync signals.

Q: What is FSYNC used for? 
A: FSYNC can be used to synchronize external devices such as cameras, controllers, or lighting systems.

Q: What does the LINK LED mean? 
A: The LINK LED turns on when the Transmitter and Receiver are connected and linked.

Q: What does the USB LED mean? 
A: The USB LED turns on when USB 3.0 signal is detected, blinks when USB 2.0 signal is detected, and turns off when no USB signal is detected.

Q: What should I do if the device is not working? 
A: Check that all connections are made correctly, try changing the CAT cable, use a different USB port on the PC or laptop, and unplug high-power devices like hard drives or SSDs to test again.

Q: What should I do if a USB device is not detected? 
A: Test the USB device directly with the computer, check the USB cable, check the selected host input, check the LINK and USB LEDs, and try another USB device port.

Q: What should I do if HDMI output does not work? 
A: Check the host connection, HDMI cable, display input, CAT6a cable, LINK LED, and confirm the display supports the selected resolution.

Q: What should I do if a webcam or USB camera freezes? 
A: Use high-quality CAT6a cable, confirm USB 3.0 signal is detected, avoid low-quality USB cables, and test the camera directly with the host computer.

Q: Can I connect an external hard drive or SSD? 
A: It may work, but high-power devices can cause issues. If the device is not working, unplug the high-power device and test again or use a separately powered device.

Q: Does the USB3-EX2H330R-K need external power? 
A: Yes. Use the included DC 24V/3.75A power adapter. Because it supports bi-directional PoC, the adapter can be connected to either the Transmitter or Receiver.