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EX-330-KVM Overview and Use Cases

Siddhant
Updated

What Is the EX-330-KVM?

The OREI EX-330-KVM is a 1080p HDMI over IP extender kit with USB KVM function. It sends HDMI video, audio, one-way IR control, and USB keyboard/mouse control over CAT 5e / CAT 6 cable.

The kit includes an Encoder and Decoder. The HDMI source connects to the Encoder, the HDMI display connects to the Decoder, and the units can be connected directly with CAT cable or through a 1G network switch for one-to-many distribution.

The EX-330-KVM uses H.265 encoding / decoding and supports HDCP 1.4, with a video bandwidth of 6.75Gbps. It supports HDMI input resolutions up to 1920x1200@60Hz and HDMI output resolutions up to 1080p@60Hz. It also supports USB 1.1 KVM control, one-way IR control, 1G switch / router / hub support, DHCP support, and transmission distance up to 150m / 492ft over CAT 5e / CAT 6 cable.

The EX-330-KVM is useful for classrooms, offices, conference rooms, control rooms, monitoring setups, digital signage, training rooms, and AV installations where one HDMI source needs to be extended or distributed while also allowing remote keyboard and mouse control.

 

IMPORTANT — EX-330-KVM Is an HDMI Over IP Extender With USB KVM

The EX-330-KVM is different from a basic HDMI extender.

It supports:

Function What It Does
HDMI Over IP Extension Sends HDMI video over CAT cable using H.265 compression
One-to-One Connection One Encoder connects directly to one Decoder
One-to-Many Distribution One Encoder connects to multiple Decoders through a 1G switch
USB KVM Allows keyboard and mouse control from the Decoder side
One-Way IR Allows source control from the display side

This makes it useful when a computer or HDMI source needs to be controlled from a remote display location.

 

IMPORTANT — EX-330-KVM Supports 1080p Output, Not 4K

The EX-330-KVM supports input video resolution up to 1920x1200@60Hz.

The output video resolution is up to 1080p@60Hz.

It does not support 4K, 4K@60Hz, 4K@120Hz, or 8K.

For 4K setups, use a 4K HDMI over IP extender.

 

IMPORTANT — This Product Uses H.265 Compression

The EX-330-KVM uses standard H.265 encoding and decoding.

This helps reduce bandwidth usage so the HDMI signal can be sent over a standard 1G network switch.

Because it uses compression, it is not the same as an uncompressed HDMI extender.

For applications that require completely uncompressed video or zero-latency performance, use an extender designed for that requirement.

 

IMPORTANT — Use a 1G Network Switch for One-to-Many Setups

The EX-330-KVM supports 1G standard IP switch / router / hub connections.

For one-to-many setups, use a 1G network switch.

Do not use a 10/100Mbps switch.

For best reliability, keep the extender system on a dedicated network switch when possible.

 

IMPORTANT — USB KVM Uses USB 1.1

The EX-330-KVM supports USB 1.1 KVM function.

This is intended for basic USB keyboard and mouse control.

It is not designed for high-speed USB devices such as:

  1. USB storage drives
  2. Webcams
  3. USB audio interfaces
  4. Capture cards
  5. High-speed USB peripherals 
     
    For best results, connect a standard USB keyboard and mouse to the Decoder USB ports.

 

IMPORTANT — One-Way IR Control Is Supported

The EX-330-KVM supports one-way IR control.

The IR signal travels from the Decoder side back to the Encoder side.

Typical setup:

  1. Connect the IR Receiver cable to IR IN on the Decoder
  2. Connect the IR Blaster cable to IR OUT on the Encoder
  3. Place the IR Receiver near the remote display
  4. Place the IR Blaster near the HDMI source device’s IR sensor 
     
    This allows the user near the remote display to control the HDMI source device.

 

IMPORTANT — Both Encoder and Decoder Need Power

The EX-330-KVM package includes two 5V/1A power supplies.

This means both the Encoder and Decoder need their own power connection.

This model does not list Power over Cable.

Connect one power adapter to the Encoder and the second power adapter to the Decoder.

 

IMPORTANT — No HDMI Loop Out

The EX-330-KVM does not include HDMI loop out.

It has:

  1. HDMI IN on the Encoder
  2. HDMI OUT on the Decoder 
     
    If a local display is needed near the HDMI source, use a separate HDMI splitter or choose an extender model with HDMI loop output.

 

IMPORTANT — Audio Support Is LPCM 2.0

The EX-330-KVM supports HDMI audio formats:

Direction Audio Format
Input LPCM 2.0CH 32kHz / 44.1kHz / 48kHz
Output LPCM 2.0CH 48kHz

If there is no audio, set the HDMI source audio output to PCM, LPCM, or Stereo.

This model does not list Dolby Digital, DTS 5.1, Dolby TrueHD, DTS-HD Master Audio, or Dolby Atmos support.

 

Ports and Panel Layout

Port / LED Unit Function
DC 5V Encoder Connect the included 5V/1A power adapter
LAN Encoder Connect to Decoder LAN port or to a switch / router / hub using CAT cable
IR OUT Encoder Connect IR Blaster cable; signal comes from Decoder IR IN
HDMI IN Encoder Connect HDMI source device
PC USB-B Port Encoder Connect to the PC for USB KVM control from the Decoder side
Orange Data Signal Indicator Encoder Flickers when LAN port is transmitting signal
Green Power LED Encoder Lights when Encoder is powered on
DC 5V Decoder Connect the included 5V/1A power adapter
LAN Decoder Connect to Encoder LAN port or to a switch / router / hub using CAT cable
IR IN Decoder Connect IR Receiver cable; signal is sent to Encoder IR OUT
HDMI OUT Decoder Connect HDMI display
USB-A Ports x2 Decoder Connect USB keyboard and mouse
Orange Data Signal Indicator Decoder Flickers when LAN port is transmitting signal
Green Power LED Decoder Lights when Decoder is powered on

 

Step-by-Step Setup

  1. Connect the HDMI source device to HDMI IN on the Encoder. 
    Examples include a desktop PC, laptop, DVR, media player, Blu-ray player, or other HDMI source.
  2. Connect the HDMI display to HDMI OUT on the Decoder. 
    Examples include a TV, monitor, projector, or commercial display.
  3. For one-to-one setup, connect the Encoder LAN port directly to the Decoder LAN port using CAT 5e / CAT 6 cable.
  4. For one-to-many setup, connect the Encoder to a 1G network switch, then connect one or more Decoders to the same switch.
  5. Connect one included 5V/1A power adapter to the Encoder.
  6. Connect the second included 5V/1A power adapter to the Decoder.
  7. If using USB KVM, connect the Encoder USB-B PC port to the computer using a USB cable.
  8. Connect a USB keyboard and mouse to the two USB-A ports on the Decoder.
  9. If using IR control, connect the IR Blaster cable to IR OUT on the Encoder.
  10. Connect the IR Receiver cable to IR IN on the Decoder.
  11. Power on the HDMI source, display, Encoder, Decoder, and network switch if used.
  12. Test video, audio, USB keyboard/mouse control, and IR control.

 

CAT Cable Requirement — Critical

For best performance, use high-quality CAT 5e / CAT 6 cable.

Signal Cable Type Distance
1920x1200@60Hz Input / 1080p@60Hz Output CAT 5e / CAT 6 Up to 150m / 492ft

Poor-quality, damaged, or incorrectly terminated CAT cable may cause:

  1. No video
  2. Flickering
  3. Black screen
  4. Data signal indicator not flickering
  5. Signal dropouts
  6. USB KVM not working
  7. IR control issues
  8. One-to-many distribution problems 
     
    For one-to-many setups, use a 1G network switch.

 

HDMI Cable Requirement — Critical

Use good-quality HDMI cables for the source and display.

The manual lists HDMI IN / OUT cable length up to 50ft / 15m for 1920x1200@60Hz.

Poor HDMI cables may cause:

  1. No picture
  2. Flickering
  3. Audio issues
  4. HDCP handshake issues
  5. No signal
  6. Wrong resolution 
     
    For troubleshooting, test the HDMI source directly with the display before using the extender.

 

Understanding the Encoder

The Encoder is installed near the HDMI source device.

It has:

  1. HDMI IN for the source
  2. LAN output to connect to the Decoder or 1G switch
  3. IR OUT for the IR Blaster cable
  4. USB-B PC port for KVM control
  5. DC 5V power input
  6. Power and data indicators 
     
    The Encoder captures the HDMI signal, encodes it using H.265, and sends it through CAT cable or a 1G network switch.

 

Understanding the Decoder

The Decoder is installed near the remote display.

It has:

  1. LAN input from the Encoder or 1G switch
  2. HDMI OUT to the display
  3. IR IN for the IR Receiver cable
  4. Two USB-A ports for keyboard and mouse
  5. DC 5V power input
  6. Power and data indicators 
     
    The Decoder receives the encoded signal, decodes it, and outputs HDMI video to the display.

 

Understanding USB KVM Function

KVM means keyboard, video, and mouse.

The EX-330-KVM allows a user at the Decoder side to control the computer connected to the Encoder side.

Basic KVM setup:

Location Connection
Encoder side HDMI source / PC connects to HDMI IN
Encoder side PC USB connects to Encoder USB-B PC port
Decoder side Monitor connects to HDMI OUT
Decoder side Keyboard and mouse connect to Decoder USB-A ports

This allows keyboard and mouse control from the remote display location.

 

Understanding One-to-One Connection

In one-to-one mode, one Encoder connects directly to one Decoder.

Example:

Device Connection
HDMI Source / PC Encoder HDMI IN
PC USB Port Encoder PC USB-B port
Encoder CAT cable to Decoder
Decoder HDMI OUT to display
Keyboard / Mouse Decoder USB-A ports

Use this setup when one source needs to be extended to one display with keyboard and mouse control.

 

Understanding One-to-Many Connection

In one-to-many mode, one Encoder can send the HDMI signal to multiple Decoders through a 1G switch.

Example:

Device Connection
HDMI Source Encoder HDMI IN
Encoder CAT cable to 1G switch
Decoders Connected to same 1G switch
Displays Connected to each Decoder HDMI OUT

Use this setup when one source needs to be displayed on multiple screens.

USB KVM control should be planned carefully in one-to-many setups because multiple Decoders may be connected to the same Encoder system.

 

Understanding IR Control

The EX-330-KVM supports one-way IR control from the Decoder side to the Encoder side.

Typical setup:

IR Cable Connection Placement
IR Receiver Decoder IR IN Near the display, visible to the remote control
IR Blaster Encoder IR OUT Near the source device’s IR sensor

This allows a user near the display to control the HDMI source.

The supported IR frequency is 20kHz to 60kHz.

 

Understanding IR Receiver Distance

The manual lists IR receiver distance based on remote angle.

Remote Angle IR Distance
±45° 0–5m
±90° 0–8m

Place the IR Receiver where the remote control has clear line of sight.

 

Understanding Indicator Lights

The EX-330-KVM includes power and data signal indicators.

Indicator Unit Meaning
Green Power LED Encoder / Decoder Lights when the unit is powered on
Orange Data Signal Indicator Encoder / Decoder Flickers when the LAN port is transmitting signal

Use these indicators when troubleshooting no video, no connection, or unstable signal.

 

Supported Video and Audio

The EX-330-KVM supports video formats including:

Supported Video
Input up to 1920x1200@60Hz
Output up to 1080p@60Hz
RGB
YCbCr 4:4:4
YCbCr 4:2:2
8-bit color
10-bit color
12-bit color

Supported audio:

Audio Direction Supported Audio
Input LPCM 2.0CH 32kHz / 44.1kHz / 48kHz
Output LPCM 2.0CH 48kHz

Supported control:

Control Feature Support
USB KVM USB 1.1 keyboard and mouse
IR One-way IR control
Network 1G switch / router / hub support
DHCP Supported

 

What Source Devices Is the EX-330-KVM Compatible With?

The OREI EX-330-KVM is compatible with HDMI source devices such as:

  1. Desktop PCs
  2. Laptops with HDMI output
  3. DVRs
  4. NVRs
  5. Media players
  6. Blu-ray players
  7. DVD players
  8. Cable boxes
  9. Satellite receivers
  10. Set-top boxes
  11. HDMI monitoring equipment 
     
    For KVM control, the source computer must also be connected to the Encoder USB-B PC port.

 

What Displays Is the EX-330-KVM Compatible With?

The EX-330-KVM can connect to HDMI displays such as:

  1. 1080p TVs
  2. Monitors
  3. Projectors
  4. Commercial displays
  5. Control room displays
  6. Classroom displays
  7. Conference room displays
  8. Retail signage screens
  9. Monitoring displays 
     
    The connected display must support the selected output resolution. 
     
    For troubleshooting, set the source resolution to 1080p@60Hz or lower.

 

What USB Devices Is the EX-330-KVM Compatible With?

The EX-330-KVM USB KVM function is designed for:

  1. USB keyboard
  2. USB mouse 
     
    Because it supports USB 1.1, it is not intended for high-speed USB devices such as storage drives, webcams, or capture devices.

 

What Network Equipment Is the EX-330-KVM Compatible With?

For one-to-many setups, use:

  1. 1G network switch
  2. CAT 5e / CAT 6 cable
  3. Properly terminated Ethernet cables
  4. Dedicated AV network when possible 
     
    The manual lists support for 1G standard IP switch / router / hub and DHCP. 
     
    Avoid 10/100Mbps switches for best performance.

 

Frequently Asked Questions

Q: What is the OREI EX-330-KVM used for? 
A: The EX-330-KVM is used to extend HDMI video and USB keyboard/mouse control up to 150m / 492ft over CAT 5e / CAT 6 cable. It also supports one-to-many HDMI over IP distribution through a 1G switch.

Q: Is the EX-330-KVM an HDMI over IP extender? 
A: Yes. It uses H.265 encoding / decoding to send HDMI video over CAT cable or a 1G network switch.

Q: Does the EX-330-KVM support 4K? 
A: No. It supports input resolution up to 1920x1200@60Hz and output resolution up to 1080p@60Hz.

Q: Does the EX-330-KVM support 1080p@60Hz? 
A: Yes. The Decoder outputs up to 1080p@60Hz.

Q: What is the maximum input resolution? 
A: The Encoder supports input video resolution up to 1920x1200@60Hz.

Q: What is the maximum output resolution? 
A: The Decoder outputs up to 1080p@60Hz.

Q: What compression does it use? 
A: It uses H.265 encoding and decoding.

Q: Is this an uncompressed HDMI extender? 
A: No. It uses H.265 compression.

Q: How far can it extend HDMI? 
A: It supports transmission up to 150m / 492ft between Encoder and Decoder over CAT 5e / CAT 6 cable.

Q: What CAT cable should I use? 
A: Use CAT 5e or CAT 6 cable.

Q: Can I connect the Encoder directly to the Decoder? 
A: Yes. One-to-one direct connection is supported.

Q: Can I use a network switch? 
A: Yes. It supports 1G standard IP switch / router / hub connections.

Q: Can I use one Encoder with multiple Decoders? 
A: Yes. One Encoder can connect to multiple Decoders through a 1G switch.

Q: Can I use a 10/100Mbps switch? 
A: No. Use a 1G switch.

Q: Does the EX-330-KVM support DHCP? 
A: Yes. The manual lists DHCP support.

Q: Does the EX-330-KVM support USB KVM? 
A: Yes. It supports USB KVM function.

Q: What USB version does it support? 
A: It supports USB 1.1.

Q: Can I connect a keyboard and mouse? 
A: Yes. Connect the keyboard and mouse to the two USB-A ports on the Decoder.

Q: Can I use USB storage drives with this extender? 
A: It is not recommended. The USB function is USB 1.1 and intended for keyboard and mouse control.

Q: How do I connect the PC for KVM control? 
A: Connect the computer’s USB port to the Encoder PC USB-B port, then connect a keyboard and mouse to the Decoder USB-A ports.

Q: Does it support IR control? 
A: Yes. It supports one-way IR control from the Decoder side to the Encoder side.

Q: Which IR cable goes into IR IN? 
A: The IR Receiver cable connects to IR IN on the Decoder.

Q: Which IR cable goes into IR OUT? 
A: The IR Blaster cable connects to IR OUT on the Encoder.

Q: What IR frequency is supported? 
A: The manual lists 20kHz to 60kHz.

Q: Does the EX-330-KVM need power on both ends? 
A: Yes. The package includes two 5V/1A power supplies, one for the Encoder and one for the Decoder.

Q: Does it support Power over Cable? 
A: No Power over Cable function is listed in the manual.

Q: Does the EX-330-KVM have HDMI loop out? 
A: No. This model does not include HDMI loop out.

Q: What audio formats are supported? 
A: It supports LPCM 2.0CH audio. Input supports 32kHz / 44.1kHz / 48kHz, and output supports 48kHz.

Q: Why is there no audio? 
A: Set the source audio output to PCM, LPCM, or Stereo. Also check that the display supports HDMI audio.

Q: What does the orange data indicator mean? 
A: It flickers when the LAN port is transmitting signal.

Q: What does the green power indicator mean? 
A: It lights when the Encoder or Decoder is powered on.

Q: What should I do if there is no video? 
A: Check both power adapters, confirm HDMI input and output connections, use CAT 5e / CAT 6 cable, check the orange data indicator, and test one-to-one connection before using a switch.

Q: What should I do if KVM control does not work? 
A: Make sure the PC is connected to the Encoder USB-B PC port and the keyboard/mouse are connected to the Decoder USB-A ports. Use basic USB keyboard and mouse devices.

Q: What should I do if one-to-many does not work? 
A: Confirm the switch is 1G, test one Decoder first, check all CAT cables, and keep the system on a dedicated switch if possible.

Q: Does the EX-330-KVM need external power? 
A: Yes. Connect one included 5V/1A power supply to the Encoder and the second 5V/1A power supply to the Decoder.

 

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