# Power Supply Unit Chieftec CSN-550C 550 W

**URL:** https://aio.lv/en/product--chieftec-csn-550c--502782
**Data updated:** 2026-01-13 15:24 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** CHIEFTEC
**Manufacturer code:** CSN-550C
**EAN:** 4710713235762
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 87.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 72.72 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--chieftec-csn-550c--502782

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The Chieftec CSN-550C is a fully-modular power supply unit with a total power of 550 W, designed for PCs. It features a 20+4 pin ATX motherboard connector, operates on an AC input voltage of 100 - 240 V, and has an 80 PLUS Gold certification for energy efficiency. The unit includes one 8 cm fan for cooling and has compact dimensions of 125 mm width, 100 mm depth, and 64 mm height, making it suitable for various PC builds.

## Long description

The Chieftec CSN-550C 550 W is a fully-modular power supply unit designed for desktop PCs. With a rated total power of 550 W and 80 PLUS Gold certification, the unit provides efficient power delivery across an AC input range of 100–240 V. The PSU uses a 20+4 pin ATX motherboard connector and integrates a single 80 mm cooling fan in a compact black housing with dimensions 125 mm (W) × 100 mm (D) × 64 mm (H), making it suitable for a variety of chassis layouts and mainstream system builds.
Advantages
The Chieftec CSN-550C offers high energy efficiency with its 80 PLUS Gold rating and an efficiency figure of approximately 90%, which helps reduce wasted energy and heat generation. Its fully-modular cabling design simplifies system assembly and cable management by allowing only required cables to be connected. The compact form factor and single 80 mm fan create a small footprint that fits many cases while providing targeted cooling for internal components. The 20+4 pin ATX connector ensures compatibility with standard motherboards.
Suitable for
 Home and office desktop PCs with moderate power requirements
 Mainstream gaming systems without extreme multi-GPU configurations
 Compact or mid-tower cases where space-saving PSUs are preferred
 System builders prioritizing cable management and clean internal layout
Key specifications
 Total power: 550 W
 Efficiency: 90% (typical), 80 PLUS Gold certified
 AC input voltage: 100–240 V
 Motherboard connector: 20+4 pin ATX
 Cooling: one 80 mm fan
 Colour: Black
 Dimensions (W × D × H): 125 mm × 100 mm × 64 mm
How to use
Install the Chieftec CSN-550C in a compatible PC chassis following the case manufacturer’s instructions for PSU orientation and mounting. Connect the 20+4 pin ATX cable to the motherboard and attach only the modular cables required for your system components to minimize clutter. Ensure the AC mains cable is compatible with local outlets and that the AC input is within the specified 100–240 V range. Power on the system and verify stable operation and proper cooling; monitor voltages using motherboard utilities or third-party software if required.
Usage recommendations
Use the fully-modular design to route cables behind the motherboard tray for improved airflow and tidier builds. Allow for adequate ventilation around the 80 mm fan and avoid restricting intake/exhaust paths. For systems with high continuous power draw or planned upgrades to power-hungry components, consider headroom above the 550 W rating to maintain efficiency and longevity.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 550 W |
| Efficiency | 90 % |
| Power Factor Correction (PFC) type | Active |
| Power protection features | Overload, Overheating, Over voltage, Over current, Short circuit, Under voltage |
| Power factor | 0.9 |
| Combined power (+3.3V) | 90 W |
| Combined power (+5V) | 90 W |
| Max output current (+3.3V) | 18 A |
| Max output current (+5V) | 15 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 3 A |
| Input current | 6 |
| AC input frequency | 47 - 63 |
| AC input voltage | 100 - 240 |
| Max output current (+12V1) | 45.8 A |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 20+4 pin ATX |
| Floppy drive power connector | 1 |
| Number of SATA power connectors | 4 |
| Peripheral (Molex) power connectors (4-pin) | 3 |
| ATX power connector (20+4 pin) | Yes |
| CPU power connector (4+4 pin) | Yes |
| PCI Express power connectors (6+2 pin) | 2 |
| Cabling type | Fully-Modular |

### Performance

| Feature | Value |
|---|---|
| Purpose | PC |
| 80 PLUS certification | 80 PLUS Gold |
| ATX version | 2.3 |
| Power supply unit (PSU) form factor | PS/2 |

### Design

| Feature | Value |
|---|---|
| Fan diameter | 80 mm |
| Number of fans | 1 fan(s) |
| Product colour | Black |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 64 mm |
| Width | 125 mm |
| Depth | 100 mm |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 84733020 |

## FAQ

### How much does the Power Supply Unit Chieftec CSN-550C cost, and is it available for purchase?

The price is 87.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 115 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 09.07.2026 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 Power Supply Unit Chieftec CSN-550C 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 CHIEFTEC 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 CHIEFTEC 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, efficiency, 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.

## Image

https://aio.lv/img/cache/product/502782/64775476_large.webp