Watercool MO-RA IV Passive Control Manual

General Information

Please read the instructions carefully before starting the assembly. Failure to follow the instructions or an incorrect assembly can cause permanent damage to your hardware. The assembly is done at your own risk.

1. Features

The MO-RA IV Passive Control is the standard solution for electrically connecting a MO-RA IV radiator to the PC. Connections for pumps, fans, and lighting are routed through a single cable.

Most Important Features:

• Max. power 30W on 5V and 120W on 12V (120W combined).
• Up to 2 pumps can be connected.
• Up to 3 aRGB strips or modules can be connected.
• One fan speed signal for the pumps (on PUMP1 header).
• One fan speed signal for the fans (side selectable via switch).
• Onboard USB 2.0 Hub (additional USB Type C Cable needed).
• Onboard 5V generation.

Scope of Delivery

2. Board Layouts

The MO-RA LINK unit features several connection points for system integration. Key connectors include:

• Main Connection: A primary interface for connecting to the motherboard and fan control.
• USB 2.0 Hub: Provides USB connectivity.
• PUMP 1 WITH RPM: Connector for the first pump, including RPM signal.
• PUMP 2: Connector for the second pump.
• USB-C IN: Input for USB Type-C connection.
• PCIe POWER: Connection for 12V PCIe 6-pin power from the power supply.
• aRGB: Connectors for addressable RGB lighting.
• SYNC PUMP FAN: Combined sync and fan control header.
• SIDE SELECT RPM SIGNAL: A switch to select the RPM signal source for fans.
• CONNECT TO FAN HUB: Port for connecting to the fan hub.

Diagrams illustrate the layout of these connectors on the MO-RA LINK unit, showing connections to the motherboard/fan control, power supply, and fan hub.

3. PC Side Connections

3.1 Standard

This configuration connects the MO-RA IV Passive Control unit directly to the PC's motherboard and power supply.

The setup involves:

• A MAIN CABLE (SKU 63200) connecting the MO-RA LINK unit to the motherboard's fan control headers.
• An LED SYNC CABLE (SKU 63100) for RGB lighting synchronization.
• PUMP PWM TACHO (SKU 63130) and FAN PWM TACHO (SKU 63130) cables for pump and fan speed control, respectively, connecting to appropriate motherboard headers.
• A 12V PCIe 6-pin cable from the power supply providing power to the MO-RA LINK unit.

Diagrams illustrate the routing of these cables from the MO-RA LINK unit to the motherboard and power supply.

3.2 Optional - With PCI Slot Adapter

This optional setup uses a PCI slot adapter for routing the main connection cable.

The configuration includes:

• The MAIN CABLE connecting the MO-RA LINK unit.
• A SLOT ADAPTER that interfaces with a PCI slot in the computer.
• The adapter then connects to the main cable, allowing the MO-RA LINK unit to be controlled from an external PCI slot.

Diagrams show the connection path via the slot adapter.

4. Radiator Side Connections

4.1 On MO-RA IV 200/400

This section details connecting fans to the MO-RA IV 200/400 radiator.

The setup involves:

• A FAN HUB CABLE 340 (SKU 63205) connecting the MO-RA LINK unit to a fan hub.
• Two FAN 210 (SKU 63210) units are connected to the fan hub.
• The fan hub provides connections for multiple fans, with indicators for RPM SIGNAL LEFT and RPM SIGNAL RIGHT, allowing individual fan speed monitoring.

Diagrams illustrate the fan hub and fan connections to the radiator.

4.2 On MO-RA IV 600

This section details connecting fans to the MO-RA IV 600 radiator.

The setup involves:

• A FAN HUB CABLE 340 (SKU 63205) connecting the MO-RA LINK unit to the first fan hub.
• A FAN HUB CABLE 170 (SKU 63204) connects the first fan hub to a second fan hub.
• Four FAN 210 (SKU 63210) units are connected across the two fan hubs.
• Each fan hub supports multiple fans and indicates RPM SIGNAL LEFT and RPM SIGNAL RIGHT for speed monitoring.

Diagrams illustrate the fan hub arrangement and fan connections to the radiator.

5. Fan Hub Mounting

5.1 On MO-RA IV 200/400

This section describes how to mount the fan hub onto the MO-RA IV 200/400 radiator.

Required Tools:

• Torx TX10 screwdriver.

Mounting Material:

• 2x M3x8 screws.

Diagrams show the process of attaching a fan hub bracket to the radiator frame using the specified screws. The bracket is secured to the radiator's mounting points.

5.2 On MO-RA IV 600

This section describes how to mount the fan hubs onto the MO-RA IV 600 radiator.

Required Tools:

• Torx TX10 screwdriver.

Mounting Material:

• 4x M3x8 screws.

Diagrams illustrate the mounting of fan hub brackets to the MO-RA IV 600 radiator frame using the specified screws. The brackets are secured to the radiator's mounting points.

6. Mounting the Control Unit

This section details the physical installation of the MO-RA IV Passive Control Unit onto the radiator assembly.

The unit is designed to clip or slide into a designated mounting point on the radiator. Diagrams show a two-step process (labeled 1 and 2) indicating how the control unit is attached and secured to the radiator structure.

7. Pin Layout

7.1 MO-RA IV Passive Control

This section provides detailed pinout information for the MO-RA IV Passive Control unit's connectors.

Key connectors and their pin assignments are illustrated:

• PUMP1/PUMP2: Connectors for pumps, including PWM control and TACHO (RPM) signals.
• FAN L/FAN R: Connectors for fans, including PWM control and TACHO (RPM) signals.
• aRGB: Connectors for addressable RGB data and power (5V, GND).
• MAIN: Main connection header with various signals.
• USB C: USB Type-C connector.
• PCIe POWER: 12V power input.

Detailed diagrams show the pin configuration for each connector, specifying functions like 5V, DM, DP, NC (No Connect), GND, PWM, RGB DATA, TACHO, PUMP, FAN. A note indicates that signal/data lines are conditioned.

7.2 MO-RA IV Fan Hub

This section provides detailed pinout information for the MO-RA IV Fan Hub connectors.

Key connectors and their pin assignments are illustrated:

• FAN L/FAN R: Connectors for fans, including PWM control and TACHO (RPM) signals.
• PWM: Pulse Width Modulation control signal.
• TACHO: Fan speed (RPM) signal.
• 12V: Power input for fans.
• GND: Ground connection.
• N.C.: No Connect pins.

Detailed diagrams show the pin configuration for each connector. A note indicates that signal/data lines are conditioned.