# Power supply ASRock CL-550B Challenger 550W ATX, 20+4 pin, 80 PLUS Bronze, 120 mm fan, black

**URL:** https://aio.lv/en/product--asrock-90-uxc055-bneaaa--11276807
**Data updated:** 2026-01-21 11:09 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** ASROCK
**Manufacturer code:** 90-UXC055-BNEAAA
**EAN:** 4710483948008
**Warranty:** 5 Years
**Availability:** Available for order
**Price:** 56.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 47.10 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--asrock-90-uxc055-bneaaa--11276807

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.06.2026 | free |
| Pickup points | 03.07.2026 | 1.89 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

ASRock CL-550B Challenger is a 550 W ATX power supply with 80 PLUS Bronze efficiency and active PFC. It features a 120 mm top-mounted fan, 20+4 pin motherboard connector, 6+2 pin PCIe (2x), 4-pin EPS (1x), 4 SATA and 2 Molex connectors. Input 100–240 V, protections include OPP. Compact black housing (150×140×86 mm).

## Long description

The ASRock Challenger power supply series includes 80 PLUS Gold models (850W, 750W, 650W) and 80 PLUS Bronze models (750W, 650W, 550W). The Challenger 550W 80 PLUS Bronze unit provides stable power delivery for mainstream desktop systems and comes in a black finish with an active 120 mm cooling fan. It uses a standard 20+4 pin ATX motherboard connector and integrates a 5V BOOST function for auxiliary power needs.
Advantages
This 550W ASRock Challenger power supply is 80 PLUS Bronze certified, offering improved energy efficiency compared with non-certified units. It features a 120 mm golf-blade fan for effective cooling and reduced noise, plus built-in safety protections to protect system components under varying load conditions. The product is backed by ASRock's 5-year warranty for long-term reliability.
Key specifications
Certification: 80 PLUS Bronze
Wattage: 550 W
Cooling: 120 mm golf-blade fan
Motherboard connector: 20+4 pin ATX
Form factor: PC ATX
Color: Black
Additional feature: Built-in 5V BOOST function
How to use
Install the power supply into a compatible ATX PC case, secure it with mounting screws, and connect the 20+4 pin ATX connector to the motherboard. Attach required peripheral and GPU power connectors according to your system configuration. Ensure proper airflow around the 120 mm fan and connect the unit to a grounded mains outlet. Verify system stability at different loads and follow standard safety precautions when working inside a computer.
Recommendations
Use this 550W ASRock Challenger model for mainstream desktop builds without high-end multi-GPU setups. For systems with high power demands, choose a higher wattage Challenger Gold model. Keep the PSU dust-free and ensure adequate case ventilation to maintain cooling efficiency and longevity.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 550 W |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 20+4 pin ATX |
| CPU power connector (4+4 pin) | Yes |
| PCI Express power connectors (6+2 pin) | 1 |
| Motherboard power cable length | 600 mm |

### Performance

| Feature | Value |
|---|---|
| Purpose | PC |
| 80 PLUS certification | 80 PLUS Bronze |
| Mean time between failures (MTBF) | 100000 h |
| ATX version | 2.52 |
| Power supply unit (PSU) form factor | ATX |

### Design

| Feature | Value |
|---|---|
| Fan diameter | 120 mm |
| Number of fans | 1 fan(s) |
| Cooling type | Active |
| On/off switch | Yes |
| Product colour | Black |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 86 mm |
| Width | 150 mm |
| Depth | 140 mm |

### Packaging data

| Feature | Value |
|---|---|
| Package type | Box |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | CPU, PATA, SATA |

## FAQ

### How much does the ASRock CL-550B Challenger 550W ATX PSU cost, and is it available for purchase?

The price is 56.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 45 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 30.06.2026 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. All transactions are 100% secure and encrypted.

### 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 ASROCK 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 ASROCK 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: total power, motherboard power connector, 80 plus certification, fan diameter, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for ASRock CL-550B Challenger 550W ATX PSU?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

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