What Is the USB3-EX330R-K?
The OREI USB3-EX330R-K is a USB 3.2 extender kit that extends USB connections up to 330ft / 100m over CAT6a cable.
The kit includes a Transmitter and Receiver. The Transmitter connects to a computer or laptop through the USB HOST port, the Receiver connects to USB devices such as USB drives or webcams, and a CAT6a cable connects the Transmitter to the Receiver.
The USB3-EX330R-K supports USB 3.2 Gen1, data transfer rates up to 5Gbps, backward compatibility with USB 2.0 and USB 1.1, four USB-A ports on the Receiver, Power over Cable, plug-and-play setup, and transmission distance up to 100m / 328ft over CAT6a F/FTP cable. The Receiver includes two USB ports supporting up to 5V/1.5A and two USB ports supporting up to 5V/1A.
The USB3-EX330R-K is useful for webcams, USB drives, security cameras, conference room cameras, control rooms, classrooms, offices, production setups, and installations where USB devices need to be accessed remotely from a computer.
IMPORTANT — USB3-EX330R-K Extends USB Only
The USB3-EX330R-K is a USB extender.
It does not extend:
- HDMI video
- DisplayPort video
- Audio
- Ethernet internet
- IR control
- RS-232
- HDMI KVM video switching
It is designed to extend USB data between a computer and remote USB devices.
IMPORTANT — Supports USB 3.2 Gen1 up to 5Gbps
The USB3-EX330R-K supports USB 3.2 Gen1 with data transfer rates up to 5Gbps.
It is also backward compatible with:
| USB Version | Support |
| USB 3.2 Gen1 | Supported |
| USB 3.0 | Supported |
| USB 2.0 | Supported |
| USB 1.1 | Supported |
USB 2.0 and USB 1.1 devices can work, but they will operate at their own supported speed.
IMPORTANT — Extends up to 330ft / 100m
The USB3-EX330R-K extends USB up to 330ft / 100m.
| Cable Type | Maximum Distance |
| CAT6a F/FTP | 100m / 328ft |
| CAT6 / CAT7 | Listed for connection use |
For best performance, use high-quality CAT6a F/FTP cable.
Poor CAT cable quality, damaged connectors, weak terminations, or long patching paths may cause USB devices to disconnect or not detect.
IMPORTANT — Receiver Has Four USB Ports
The Receiver includes four USB-A ports.
| Receiver USB Ports | Maximum Output |
| USB 1 / USB 2 | Up to 5V/1.5A |
| USB 3 / USB 4 | Up to 5V/1A |
Use the higher-current USB 1 / USB 2 ports for devices that need more power.
The manual lists USB drives and webcams as example devices.
IMPORTANT — Power over Cable Is Supported
The USB3-EX330R-K supports Power over Cable.
Only one power adapter is needed.
| Power Setup | Support |
| Power Transmitter only | Supported |
| Power Receiver only | Supported |
| Power both units | Not required |
| Power adapter included | 1 |
The included power adapter can be connected to either the Transmitter or the Receiver.
If one unit does not power on, check the power adapter, CAT cable, and link status.
IMPORTANT — Plug and Play Setup
The USB3-EX330R-K is plug and play.
No drivers are required.
If the USB device is not detected, check:
- USB connection from computer to Transmitter
- CAT cable between Transmitter and Receiver
- Power adapter connection
- USB device connection
- USB port on the computer
- USB port on the Receiver
IMPORTANT — USB LED Shows USB Signal Type
Both the Transmitter and Receiver include a USB LED.
| USB LED Status | Meaning |
| On | USB 3.0 signal is detected |
| Blinking | USB 2.0 signal is detected |
| Off | USB signal is not detected |
Use this LED to check whether the system is detecting USB 3.0 / USB 3.2 or falling back to USB 2.0 behavior.
Ports and Panel Layout
| Port / Indicator | Unit | Function |
| POWER LED | Transmitter | Lights when the Transmitter is powered on |
| LINK LED | Transmitter | Shows connection between Transmitter and Receiver |
| USB LED | Transmitter | Shows USB signal status |
| SERVICE | Transmitter | Firmware update port |
| DC 24V | Transmitter | Connect power adapter if powering from Transmitter side |
| HDBT-USB3 | Transmitter | Connect CAT6 / CAT7 cable to Receiver |
| USB HOST | Transmitter | USB 3.2 Gen1 Type-B port; connect to computer or laptop |
| POWER LED | Receiver | Lights when the Receiver is powered on |
| LINK LED | Receiver | Shows connection between Transmitter and Receiver |
| USB LED | Receiver | Shows USB signal status |
| SERVICE | Receiver | Firmware update port |
| DC 24V | Receiver | Connect power adapter if powering from Receiver side |
| HDBT-USB3 | Receiver | Connect CAT6 / CAT7 cable to Transmitter |
| USB 1 / USB 2 | Receiver | Connect USB devices; max output up to 5V/1.5A |
| USB 3 / USB 4 | Receiver | Connect USB devices; max output up to 5V/1A |
Step-by-Step Setup
- Connect the computer or laptop to the USB HOST port on the Transmitter.
- Connect the Transmitter HDBT-USB3 port to the Receiver HDBT-USB3 port using CAT6a / CAT6 / CAT7 cable.
- Connect the included DC 24V/2A power adapter to either the Transmitter or Receiver.
- Connect USB devices to the Receiver USB-A ports.
- Power on the computer and USB devices if required.
- Check the POWER LED on both units.
- Check the LINK LED to confirm the Transmitter and Receiver are connected.
- Check the USB LED to confirm the USB signal is detected.
- Test the USB device from the computer.
CAT Cable Requirement — Critical
Use high-quality CAT6a F/FTP cable for the full listed distance.
| Requirement | Recommendation |
| Best cable for full distance | CAT6a F/FTP |
| Maximum distance | 100m / 328ft |
| Connection port | HDBT-USB3 RJ45 |
| Direct connection | Recommended |
Poor CAT cable may cause:
- USB device not detected
- Webcam not connecting
- USB drive disconnecting
- Slow transfer speed
- LINK LED off
- USB LED off
- USB signal dropping to USB 2.0
- Unstable connection
Use a direct CAT cable run whenever possible.
USB Cable Requirement — Critical
Use a USB 3.0 / USB 3.2 compatible cable between the computer and the Transmitter USB HOST port.
Poor USB cables may cause:
- No USB signal
- USB 3.0 not detected
- Device falling back to USB 2.0
- Intermittent connection
- Slow data transfer
For troubleshooting, try a different USB port on the computer or laptop.
Power Requirement — Critical
The USB3-EX330R-K uses a DC 24V/2A power adapter.
| Unit | Power Requirement |
| Transmitter | DC 24V/2A, or powered through PoC |
| Receiver | DC 24V/2A, or powered through PoC |
Only one power adapter is needed because the system supports Power over Cable.
The specifications list TX power consumption at 2.64W max, RX power consumption at 33W max, and PoC power supply at 41.3W max.
Understanding the Transmitter
The Transmitter is installed near the computer or laptop.
It has:
- USB HOST port
- HDBT-USB3 port
- DC 24V power input
- SERVICE firmware port
- POWER LED
- LINK LED
- USB LED
The Transmitter sends USB 3.2 data over CAT cable to the Receiver.
Understanding the Receiver
The Receiver is installed near the USB devices.
It has:
- Four USB-A ports
- HDBT-USB3 port
- DC 24V power input
- SERVICE firmware port
- POWER LED
- LINK LED
- USB LED
The Receiver provides USB ports for remote USB devices such as webcams, USB drives, and other USB peripherals.
Understanding the Application Example
The application diagram shows:
| Location | Connection |
| Computer side | PC connected to Transmitter USB HOST |
| Cable run | Transmitter connected to Receiver using CAT6a |
| Device side | Receiver connected to USB camera and USB drive |
| Power | Power adapter connected to Receiver side |
This means the computer can access USB devices connected at the Receiver side over the CAT cable run.
Understanding LINK and USB LEDs
| Indicator | Status | Meaning |
| LINK LED On | Transmitter and Receiver are connected and linked | |
| LINK LED Off | Transmitter and Receiver are not connected | |
| USB LED On | USB 3.0 signal is detected | |
| USB LED Blinking | USB 2.0 signal is detected | |
| USB LED Off | USB signal is not detected |
Use these LEDs first when troubleshooting.
Supported Technical Specifications
| Specification | Support |
| Product Type | USB 3.2 extender over CAT cable |
| USB Protocol | USB 3.2 Gen1 |
| Transmission Rate | Up to 5Gbps |
| Transmission Distance | 100m / 328ft over CAT6a F/FTP |
| Backward Compatibility | USB 2.0 and USB 1.1 |
| Transmitter Input | USB HOST, USB-B 9-pin female |
| Transmitter Output | HDBT-USB3 RJ45 |
| Transmitter Control | SERVICE USB-C update port |
| Receiver Input | HDBT-USB3 RJ45 |
| Receiver Output | 4 x USB-A 9-pin female |
| Receiver Control | SERVICE USB-C update port |
| USB 1 / USB 2 Output | Up to 5V/1.5A |
| USB 3 / USB 4 Output | Up to 5V/1A |
| Power over Cable | Supported |
| Power Supply | DC 24V/2A |
| TX Power Consumption | 2.64W max |
| RX Power Consumption | 33W max |
| PoC Power Supply | 41.3W max |
| Housing | Metal enclosure |
| Color | Black |
| Dimensions | 130mm x 70mm x 23mm |
| Weight | Transmitter 275g / 9.7oz; Receiver 285g / 10oz |
| Operating Temperature | 0°C to 40°C / 32°F to 104°F |
| Storage Temperature | -20°C to 60°C / -4°F to 140°F |
| Relative Humidity | 20–90% RH, non-condensing |
| ESD Protection | IEC 61000-4-2: ±8kV air-gap, ±4kV contact |
What Computers Is the USB3-EX330R-K Compatible With?
The USB3-EX330R-K can connect to computers with compatible USB ports, including:
- Desktop PCs
- Laptops
- Workstations
- Control room computers
- Conference room computers
- Classroom computers
- Security monitoring computers
The computer connects to the Transmitter USB HOST port.
What USB Devices Is the USB3-EX330R-K Compatible With?
The USB3-EX330R-K can connect to USB devices such as:
- USB drives
- Webcams
- USB cameras
- Security cameras
- Keyboard
- Mouse
- USB control devices
- Basic USB peripherals
For high-power USB devices, use the Receiver ports with the correct power rating or a powered USB hub if needed.
Frequently Asked Questions
Q: What is the OREI USB3-EX330R-K used for?
A: The USB3-EX330R-K is used to extend USB 3.2 devices up to 330ft / 100m away from a computer over CAT6a cable.
Q: Does the USB3-EX330R-K support USB 3.2?
A: Yes. It supports USB 3.2 Gen1.
Q: What is the maximum data rate?
A: It supports data transfer rates up to 5Gbps.
Q: Is it backward compatible with USB 2.0?
A: Yes. It is backward compatible with USB 2.0 and USB 1.1.
Q: How far can it extend USB?
A: It extends USB up to 100m / 328ft over CAT6a F/FTP cable.
Q: Why does the product say 330ft if the specs say 328ft?
A: 100m converts to about 328ft. The product title rounds this to 330ft.
Q: What CAT cable should I use?
A: Use CAT6a F/FTP cable for the full listed distance.
Q: Can I use CAT6 or CAT7 cable?
A: The ports list CAT6 / CAT7 connection, but the full 100m / 328ft specification is listed over CAT6a F/FTP cable.
Q: Does it work through a network switch?
A: No. Connect the Transmitter and Receiver directly with CAT cable.
Q: Does it extend HDMI video?
A: No. It extends USB only.
Q: Does it support audio?
A: It does not list separate audio support. It extends USB data only.
Q: How many USB ports are on the Receiver?
A: The Receiver has four USB-A ports.
Q: Which USB ports provide more power?
A: USB 1 and USB 2 support up to 5V/1.5A. USB 3 and USB 4 support up to 5V/1A.
Q: What connects to the Transmitter?
A: The computer or laptop connects to the Transmitter USB HOST port.
Q: What connects to the Receiver?
A: USB devices such as webcams, USB drives, cameras, keyboard, or mouse connect to the Receiver USB-A ports.
Q: Does it need power on both ends?
A: No. It supports Power over Cable, so only one power adapter is needed at either the Transmitter or Receiver.
Q: What power adapter does it use?
A: It uses a DC 24V/2A power adapter.
Q: Is driver installation required?
A: No. The manual lists plug-and-play setup with no drivers required.
Q: Can I connect a webcam?
A: Yes. The manual lists webcams as supported example devices.
Q: Can I connect a USB drive?
A: Yes. The manual lists USB drives as supported example devices.
Q: Can I access security cameras through this device?
A: Yes. The manual states that security cameras can be accessed through this device.
Q: What does the LINK LED mean?
A: LINK LED on means the Transmitter and Receiver are connected and linked. LINK LED off means they are not connected.
Q: What does the USB LED mean?
A: USB LED on means USB 3.0 signal is detected. Blinking means USB 2.0 signal is detected. Off means USB signal is not detected.
Q: What should I do if the device is not working?
A: Check that the connections are correct, try changing the CAT cable, and use a different USB port on the PC or laptop.
Q: What should I do if the USB device is not detected?
A: Check the computer USB connection, Receiver USB port, CAT cable, power adapter, LINK LED, and USB LED. Also test the USB device directly with the computer.
Q: What should I do if USB 3.0 is not detected?
A: Check that the computer port, USB cable, CAT cable, and device all support USB 3.0 / USB 3.2. The USB LED should stay on when USB 3.0 signal is detected.
Q: What should I do if the USB LED is blinking?
A: Blinking means USB 2.0 signal is detected. Check whether the connected USB device, computer port, and USB cable support USB 3.0 / USB 3.2 if USB 3 speed is required.
Q: What should I do if the LINK LED is off?
A: Check the CAT cable connection between Transmitter and Receiver, try another CAT cable, and confirm power is connected.
Q: Does the USB3-EX330R-K need external power?
A: Yes. Connect the included DC 24V/2A power adapter to either the Transmitter or Receiver. The other unit is powered through Power over Cable.
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