# Power supply LC-Power LC6550B-SI V3.1 — 550 W, 20+4 pin ATX, 80 PLUS Bronze

**URL:** https://aio.lv/en/product--lc-power-lc6550b-si-v31--11251303
**Data updated:** 2026-05-08 11:17 (EEST)
**Category:** Power Supplies (PSU)
**Manufacturer:** LC-Power
**Manufacturer code:** LC6550B-SI V3.1
**EAN:** 4262443280661
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 52.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 43.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lc-power-lc6550b-si-v31--11251303

## Delivery options

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

## Summary description

LC-Power LC6550B-SI V3.1 is an ATX power supply unit delivering 550 W total power with 20+4 pin ATX motherboard connector and 80 PLUS Bronze efficiency. It supports AC input 100–240 V, has compact ATX dimensions (150×150×86 mm) and a 135 mm cooling fan. Suitable for desktop PC builds requiring reliable mid-range PSU performance.

## Long description

LC-Power LC6550B-SI V3.1 is an ATX power supply delivering 550 W of continuous power with a standard 20+4 pin ATX motherboard connector and 80 PLUS Bronze efficiency. Designed for mid-range desktop PC builds, the unit accepts a wide AC input range (100–240 V), has compact ATX dimensions (150 × 150 × 86 mm) and integrates a 135 mm cooling fan to maintain stable operating temperatures under typical load conditions.
Advantages
The power supply offers a balanced combination of efficiency and performance, meeting 80 PLUS Bronze standards to reduce energy losses during operation. Its 20+4 pin ATX connector ensures compatibility with a wide range of motherboards while the compact housing and integrated fan simplify installation and thermal management in standard desktop cases. The unit's 550 W rating supports common mid-range hardware configurations without unnecessary overspecification.
Suitable for
Home and office desktop PCs with mid-range components
System upgrades where a reliable 550 W PSU is required
Builds using standard ATX motherboards that accept a 20+4 pin connector
Environments requiring a compact PSU with effective cooling
Key specifications
Total output power: 550 W
AC input voltage range: 100–240 V
Motherboard connector: 20+4 pin ATX
Efficiency certification: 80 PLUS Bronze
Cooling: 135 mm internal fan
Dimensions (approx.): 150 × 150 × 86 mm
Weight: 1.74 kg
How to use
Install the LC-Power LC6550B-SI V3.1 into a compatible ATX case following standard PSU mounting procedures: align the unit with the case rear bracket, secure with screws, and connect the 20+4 pin connector to the motherboard. Attach required peripheral and CPU power connectors to components as needed. Verify correct AC mains voltage and connect the mains cable to a properly grounded outlet before powering the system. After first power-on, check system stability and monitor temperatures during initial use.
Usage recommendations
Use this PSU in systems where total component power draw remains within the unit's 550 W capacity, allow adequate case airflow for effective cooling, and use a grounded mains outlet. For systems with high-power graphics cards or multiple drives, verify combined power requirements before installation.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 550 W |
| AC input voltage | 100 - 240 |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 20+4 pin ATX |

### Performance

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

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 1.74 kg |
| Height | 86 mm |
| Width | 150 mm |
| Depth | 150 mm |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 1980 g |
| Package depth | 245 mm |
| Package height | 113 mm |
| Package width | 200 mm |
| Package type | Box |

## FAQ

### How much does the LC-Power LC6550B-SI V3.1 550 W PSU cost, and is it available for purchase?

The price is 52.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 32 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 Tomorrow 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: Cash payment, 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 LC-Power 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 LC-Power 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, weight, 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/11251303/68157052_large.webp