This Kit includes :

  • PCI-MX 44UHD main board
  • PCI-MX 44UHD daughter board
  • 4pc short HDMI cables
  • 1pc internal USB cable
SKU: PCI-MX44UHD Categories: , , Tags: , , , , , ,


  • 4-IN 4-OUT HDMI Repeater with Equalizer
  • Supports 4 HDMI input ports (Port 0/1/2/3) with on-chip EDID RAM for each port.
  • Support HDMI/MHL dual mode in RX0 port.
  • On-chip 4 HDCP RX ciphers which support Instant Port Switching (IPS).
  • Supports 4 HDMI output ports with on-chip HDCP TX cipher for each port.
  • Support 32 combinations of matrix switching.
  • Support wide Frequency Range: 25MHz - 340MHz TMDS clock
  • Supports 12-bit Deep Full HD, Full 3D and 4K2K video.
  • Supports Standard Audio, DSD Audio and HD (HBR) Audio
  • On-chip HDMI Receiver and Transmitter core which are compliant with HDMI 1.4 specification
  • On-chip HDCP RX/TX Engines support Repeater and are compliant with HDCP 1.4 specification
  • HDMI-CEC passthrough
  • Supports Standard Audio, DSD Audio and HD (HBR) Audio
  • Source Signal Detection in Low Power mode
  • On-chip Power Regulator which provides regulated 3.0V and 1.6V power
  • Low stand-by current at power down mode
  • Gold plated to ensure smooth, corrosion-free connections

Easy 1-2-3 PCI-MX setup

1. Turn off and open computer chassis. Install PCI-MX and connect the USB internal cable.

2. Turn on computer and make sure you have the silabs driver installed (see download section).

3. Run the Matrix command line tool to configure the unit as you wish.

Got questions ? We have answers !

How to control/configure the PCI-MX ?

Once the card is installed and once you have the Silabs drivers installed, simply run the control software from a command line prompt. You can get a command line prompt under windows by clicking START button, then enter "CMD" in the search field. To get an overview of the possible commands available, simply write the software name (you can rename it if you need)

Usage : PCIXMatrix

Port switch examples:
Select ports: 1x1, 1x2, 2x1, 2x2, 2x3, 2x4, 3x3, 3x4, 4x3, 4x4

PCIXMatrix.exe 2x1 (Input 2 routed to the output 1)
PCIXMatrix.exe 2x3 (Input 2 routed to the output 3)

Other commands :
Hot Plug: PCIXMatrix.exe HPDx1 (Perform Hot Plug events on input 1)
EDID Sel: PCIXMatrix.exe AutomixEDID or FixedEDID or CustomEDID
Advanced Audio: PCIXMatrix.exe ADVAUDIO_ON or ADVAUDIO_OFF

How do you turn ON/OFF the furious feature ?

Try to locate a hacked firmware file for this ;)

What kind of routing option are available ?

PCI Block Diagram
Case 1:
Input 1 can go to Output 1 + 2 at the same time
Input 2 can go to Output 1 + 2 at the same time
Input 2 can go to Output 3 + 4 at the same time
Input 3 can go to Output 3 + 4 at the same time
Input 4 can go to Output 3 + 4 at the same time

Case 2:
Input 1 goes to Output 1
Input 2 goes to Output 2
Input 3 goes to Output 3
Input 4 goes to Output 4
Silabs Driver 4.0.0 for XP/WIN7/8/10
Silabs Driver 4.0.0 - ZIP - 8.75 Mo

All below downloads has been updated for the new Silabs Driver 4.0.0, Please re-download

PCI-MX 44UHD EDID Utility (PC Windows Software)
PCI-MX 44UHD EDID Utility 1.0 - ZIP - 4.8 Mo

PCI-MX Command Line Control Tool
Command Line Control Tool - ZIP - 4.4 Mo

PCI-MX Firmware v1.7
Firmware Update v1.7 - ZIP - 4.5 Mo