MANUAL | QUICK START GUIDE
CORSAIR NAUTILUS II 240 / 360 RS
PERFORMANCE LIQUID CPU COOLER
BEFORE YOU START
IMPORTANT: Before connecting multiple fans to a single CPU_FAN header, check your motherboard manual for its maximum current limit. Ensure the total current requirement of your fans does not exceed this limit. Please refer to the "POWER RATING" section at the bottom of this Quick Start Guide.
NOTE: Most newer PC cases have a cutout allowing access to the rear of the motherboard for easy installation of cooler backplates. If your case does not include a cutout, you will need to remove the motherboard from the case prior to installation.
GETTING TO KNOW
1. NAUTILUS II RS
| 1. NAUTILUS II RS (360 RS shown) | 3. Radiator Mounting Screws |
| 2. RS II Fans | 4. Intel and AMD Mounting Brackets |
2. RS II FANS
| a. Female PWM Connector | b. Male PWM Connector |
BOX CONTENTS
1x Intel LGA 1851 / 1700
Mounting Bracket Set
1x Intel LGA 1851 / 1700
Backplate
1x AMD AM5 / AM4
Mounting Bracket Set
(Pre-installed)
8x Radiator Screws (240 RS)
12x Radiator Screws (360 RS)
1x RS240 II Fans (240 RS)
1x RS360 II Fans (360 RS)
(Pre-installed)
*RS360 II shown
PREPARE YOUR NAUTILUS II RS FOR INSTALLATION
The NAUTILUS II RS cooler comes with RS II fans pre-installed. Fan orientation can be adjusted based on radiator mounting direction to help keep cables out of view.
AMD INSTALLATION
1. PREPARE THE MOTHERBOARD FOR INSTALLATION
- Remove the existing AMD AM5 / AM4 mounting brackets shown.
2. INSTALL THE PUMP UNIT
- Align the pump with the pre-installed bracket over the motherboard mounting holes, then fasten the screws a few turns at a time in a cross pattern, alternating between opposite corners, until all four are tightened.
3. INSTALL THE RADIATOR
- Mount the NAUTILUS II RS (1) inside the case with the Radiator Screws (D) as shown.
INTEL INSTALLATION
1. PREPARE THE PUMP UNIT
- Remove the pre-installed AMD AM5 / AM4 Mounting Bracket Set (C).
- Attach the Intel LGA 1851 / 1700 Mounting Bracket (A).
2. INSTALL THE BACKPLATE
- Align the backplate (B), then adhere it with the self-adhesive side behind the motherboard.
3. INSTALL THE PUMP UNIT
- Align the pump with the installed bracket over the motherboard mounting holes, then fasten the screws a few turns at a time in a cross pattern, alternating between opposite corners, until all four are tightened.
4. INSTALL THE RADIATOR
- Mount the NAUTILUS II RS (1) inside the case with the Radiator Screws (D) as shown.
CONNECT YOUR NAUTILUS II RS
1. CONNECT THE PUMP UNIT
- Connect the 4-pin PWM cable from the NAUTILUS II RS pump to the AIO_PUMP header on your motherboard.
NOTE: If your motherboard doesn't come with an AIO_PUMP header, connect the 4-pin PWM cable from the NAUTILUS II RS pump to the CPU_OPT or SYS_FAN header.
2. CONNECT THE FANS
- Connect the long, 600mm cable with the female PWM connector from the RS II fans to the CPU_FAN header on the motherboard.
ADDITIONAL SETUP
- Visit our CORSAIR EXPLORER page for additional setup, configuration, and tips.
FREQUENTLY ASKED QUESTIONS
Can I control the pump and fans using CORSAIR iCUE software?
Yes. You can use the CORSAIR COMMANDER DUO Lighting and Fan Controller (sold separately) to control the pump and fans through iCUE. For more details, please refer to the following links:
How do I know the direction of the airflow of the fan?
An arrow located on the side of the fan indicates the direction of airflow.
What orientation should I install my radiator?
Figure 1 shows the ideal radiator orientation. If case layout or clearance prevents this, use alternative setups as shown in Figure 2 and Figure 3. Whichever orientation you choose, always ensure the top of the radiator sits higher than the CPU pump.
Can I reuse the pre-applied thermal paste on the cooler for re-installation?
Re-installation of the NAUTILUS II RS Series CPU cooler will require you to clean off the pre-applied thermal paste and apply a new layer of thermal paste. We recommend using CORSAIR XTM70, sold separately.
What should I do if I've lost or damaged a specific part of the NAUTILUS II RS CPU cooler?
Replacement parts for the NAUTILUS II RS CPU coolers are sold through the CORSAIR webstore.
POWER RATING
NAUTILUS II RS pump: 12Vdc Max 1A
RS240 II Fans: 12Vdc Max 0.8A / Typical 0.34A
RS360 II Fans: 12Vdc Max 1.2A / Typical 0.51A
WARRANTY
CORSAIR NAUTILUS II RS Series coolers have a 5-year warranty.
LEGAL
© 2026 CORSAIR MEMORY, Inc. All rights reserved. CORSAIR and the sails logo are registered trademarks of CORSAIR in the United States and/or other countries. All other trademarks are the property of their respective owners. Product may vary slightly from those pictured.