# Power supply unit FSP H3-550 — 550 W, 24-pin ATX, 80 PLUS Bronze, non-modular, 120 mm fan, black

**URL:** https://aio.lv/en/product--fspfortron-9pa5509407--11174458
**Data updated:** 2026-02-23 13:21 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** fsp/fortron
**Manufacturer code:** 9PA5509407
**EAN:** 4711498480569
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 49.99 €
**Prices and availability valid until:** 2026-07-27 23:59
**Price without VAT (21%):** 41.31 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--fspfortron-9pa5509407--11174458

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

FSP H3-550 is an ATX power supply unit for desktop PCs with 550 W total power and 24‑pin ATX motherboard connector. It delivers up to 85% efficiency and holds an 80 PLUS Bronze certification. Designed with non‑modular cabling, a 120 mm active cooling fan and IEC 62368 certification, it suits mainstream builds requiring reliable PSU performance.

## Long description

FSP H3-550 is a desktop ATX power supply unit delivering 550 W of continuous power through a standard 24-pin ATX motherboard connector. The unit is 80 PLUS Bronze certified and offers around 85% typical efficiency. It features non-modular, all-black round cables, a 120 mm cooling fan with intelligent speed control and design elements that meet IEC 62368 safety requirements. The PSU is designed for mainstream systems that require reliable, stable power delivery in a compact black enclosure.
Advantages
The FSP H3-550 combines a compact footprint and a 120 mm quiet fan to provide effective cooling while minimizing noise. Its 80 PLUS Bronze efficiency reduces wasted energy and heat compared with lower-efficiency models. Non-modular cabling with all-black round cables simplifies installation and improves case appearance. Built with robust electrolytic capacitors and compliance to IEC 62368, the unit emphasizes stable output and safety for everyday desktop use.
Suitable for (tasks / use cases)
 Mainstream desktop builds and office PCs
 Home computers for web, media playback and productivity
 Small form-factor or mid-tower systems requiring a fixed-cable PSU
 Systems where a quiet 120 mm fan and modest power budget are sufficient
Key specifications
 Total power: 550 W
 Efficiency: approximately 85% (80 PLUS Bronze certified)
 Motherboard connector: 24-pin ATX
 Fan: 120 mm with intelligent speed control
 Cabling: non-modular, all-black round cables
 Safety standard compliance: IEC 62368
 Product colour: Black
 Weight: 1.255 kg
How to use
Install the FSP H3-550 into a compatible ATX power supply bay in your desktop chassis and secure it with the provided screws. Connect the 24-pin ATX cable to the motherboard and attach any additional peripheral connectors required by your system. Ensure the mains input voltage selector (if present) and AC cabling match your local supply and that the unit is connected to a properly grounded outlet. Power on the system and verify that components receive stable voltage; monitor fan operation and system temperatures during initial use.
Usage recommendations
Use the PSU within typical desktop load ranges to maintain efficiency and longevity. Keep case airflow unobstructed to allow the 120 mm fan to operate effectively. For systems with higher power demands or multiple high‑end GPUs, consider a higher‑wattage or modular unit. Regularly inspect cables and connections and ensure the unit remains dust‑free for optimal cooling and reliability.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 550 W |
| Efficiency | 85 % |
| Power Factor Correction (PFC) type | Active |
| Hold time | 17 ms |
| Power protection features | Short circuit, Over voltage, Over power, Over current |
| Power factor | 0.9 |
| Combined power (+3.3V) | 85 W |
| Combined power (+12V) | 549.6 W |
| Combined power (+5V) | 85 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 12.5 W |
| Max output current (+3.3V) | 16 A |
| Max output current (+12V) | 45.8 A |
| Max output current (+5V) | 16 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 2.5 A |
| Input current | 4.5 |
| AC input voltage | 200 - 240 |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 24-pin ATX |
| Floppy disk drive connector | Yes |
| Floppy drive power connector | 1 |
| Number of SATA power connectors | 5 |
| Peripheral (Molex) power connectors (4-pin) | 2 |
| PCI Express power connectors (6+2 pin) | 2 |
| Cabling type | Non-Modular |
| EPS power connector (4+4 pin) | Yes |

### Performance

| Feature | Value |
|---|---|
| Purpose | PC |
| 80 PLUS certification | 80 PLUS Bronze |
| ATX version | 2.4 |
| EPS version | 2.92 |
| Power supply unit (PSU) form factor | ATX |

### Design

| Feature | Value |
|---|---|
| Fan diameter | 120 mm |
| Number of fans | 1 fan(s) |
| Cooling type | Active |
| Product colour | Black |
| Illumination | No |

### Certificates

| Feature | Value |
|---|---|
| Certification | IEC 62368 |

### Technical details

| Feature | Value |
|---|---|
| Sustainability compliance | Yes |
| Sustainability certificates | ErP |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 1.255 kg |
| Height | 86 mm |
| Width | 150 mm |
| Depth | 140 mm |

## FAQ

### How much does the FSP H3-550 ATX power supply 550 W cost, and is it available for purchase?

The price is 49.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 13.07.2026 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. 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 fsp/fortron 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 fsp/fortron 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, weight, 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/11174458/67070353_large.webp