# Radiator Watercool MO-RA IV Passive Control PWM/aRGB – Multi-fan passive radiator with PWM fan control and addressable RGB

**URL:** https://aio.lv/en/product--watercool-wazu-1242--11644922
**Data updated:** 2026-02-17 11:02 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** Watercool
**Manufacturer code:** WAZU-1242
**EAN:** 4251312607104
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 130.99 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 108.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--watercool-wazu-1242--11644922

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.07.2026 | free |
| Pickup points | 22.07.2026 | 1.89 EUR |
| Courier delivery to door | 22.07.2026 | 4.99 EUR |

## Summary description

Watercool MO-RA IV Passive Control PWM/aRGB is a multi-fan passive radiator designed for custom liquid cooling loops. It features PWM fan control compatibility and addressable RGB (aRGB) lighting support for synchronized illumination. Intended for PC cooling installations, it offers high surface area for heat dissipation, flexible fan layout and aesthetic lighting, suitable for performance desktops and custom builds.

## Long description

Watercool MO-RA IV Passive Control PWM/aRGB is a multi-fan passive radiator intended for custom liquid cooling loops in desktop PCs. The unit provides a large surface area for heat dissipation, a flexible fan layout that supports multiple fan configurations, and integrated addressable RGB lighting compatibility. It is designed to be mounted in external or internal radiator bays where space and airflow can be optimized for efficient passive or active cooling.
Advantages
The MO-RA IV Passive Control integrates PWM fan control compatibility, enabling synchronized speed management across connected fans for improved thermal performance and reduced noise. Addressable RGB support allows individual LED control for consistent lighting effects with compatible controllers or motherboard software. Its multi-fan design and expanded fin area increase heat transfer capacity compared with single-fan radiators, while the modular mounting points accommodate different fan sizes and arrangements.
Suitable for
 Custom water-cooling loops for high-performance desktops
 Silent or low-noise PC builds where large passive radiators are preferred
 Systems requiring flexible fan layouts and RGB lighting synchronization
 External radiator installations in test benches or compact cases with space for larger cooling assemblies
Key specifications
 Form factor: multi-fan passive radiator suitable for custom liquid cooling loops
 Fan compatibility: supports multiple fan mounting positions and sizes for various airflow configurations
 Control interface: compatible with PWM fan speed control for coordinated fan operation
 Lighting: addressable RGB (aRGB) support for individually addressable LED control and synchronization
 Thermal design: expanded fin and tube surface area optimized for heat dissipation in passive or active setups
 Mounting: modular mounting points to accommodate different installation orientations and bracket systems
How to use
Install the MO-RA IV Passive Control into your custom loop following the radiator mounting guidelines for your case or external mount. Connect fans to a PWM-capable header or a PWM fan hub to enable coordinated speed control. Connect the aRGB cable to a compatible aRGB controller or motherboard header to enable lighting synchronization. Ensure proper coolant flow through the loop and verify secure fittings and leak-free connections before powering the system. Position fans and configure PWM curves to balance noise levels and cooling performance according to your system's heat load.
Usage recommendations
For optimal results, use PWM-capable fans and a compatible aRGB controller or motherboard header. Regularly inspect fins and fan blades for dust buildup and perform periodic maintenance on the loop to maintain thermal efficiency. When planning installation, allow adequate clearance for airflow and hose routing to maximize the radiator's heat dissipation capabilities.

## FAQ

### How much does the Watercool MO-RA IV Passive Control PWM/aRGB radiator cost, and is it available for purchase?

The price is 130.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 17.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Watercool MO-RA IV Passive Control PWM/aRGB radiator be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Watercool products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Watercool service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11644922/68521393_large.webp