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Preparing for the Installation
Before installing expansion cards, collect the required materials and prepare your work area.
To prepare for the installation:
1 Make sure you have collected the required materials:
• Thunderbolt 3 option module.
• Thunderbolt 3 cable (not included).
• Anti-Static wrist strap (not included).
• Foam or other padded surface to place the card on (not included).
• #1 Phillips screwdriver (not included).
2 Put on your anti-static wrist strap and configure according to its instructions.
3 Make sure the MTRX II is powered off and disconnect any cables connected to it.
4 Place the MTRX II on a table or other flat surface.
5 Make sure your surface is clear of any debris and that you have a padded surface nearby to place the option card if you need to set it
down during installation.
Hardware Installation
When the MTRX II is connected using Thunderbolt 3—and for macOS, the DAD CoreAudio driver is installed—the unit is recognized
as a sound device in CoreAudio and audio applications on the computer can use this interface. When installing DADman control soft-
ware on the computer the MTRX II unit can be controlled and managed over the Thunderbolt 3. This is automatically detected in DAD-
man.
To install the Thunderbolt 3 option module:
1 Use a #1 Phillips screwdriver to remove the screws on the top (10 screws) and sides (8 screws, 4 on each side) of the unit that secure
chassis cover. Carefully set each screw aside as you remove them and keep them nearby to reattach the chassis cover after cards are
installed.
2 Set the chassis cover aside.
3 Standing at the back of the unit, use a #1 Phillips screwdriver to remove the 2 screws securing the faceplate covering the
Thunderbolt 3 slot on the back of MTRX II.
4 Remove the Thunderbolt 3 option module from its packaging, being careful to handle it by its edges only.
5 Orient the card with its external connectors facing you (towards the back of the unit) and its PCIe connector also facing the back of
the unit.
6 Align the PCIe connector on the card with the PCIe port mounted in the unit.
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