# TACENS Power Supply Unit Mars Gaming MPB550SI 550 W ATX, 80 PLUS Bronze, 120 mm fan, non-modular

**URL:** https://aio.lv/en/product--tacens-tacmars-mpb550si--11269660
**Data updated:** 2026-01-21 13:39 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** TACENS
**Manufacturer code:** TACMARS-MPB550SI
**EAN:** 8435693108504
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 43.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 35.94 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tacens-tacmars-mpb550si--11269660

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 25.06.2026 | free |
| Pickup points | 30.06.2026 | 1.99 EUR |
| Courier delivery to door | 30.06.2026 | 4.99 EUR |

## Summary description

ATX power supply TACENS Mars Gaming MPB550SI with 550 W total power and 80 PLUS Bronze efficiency (≈90%). Non-modular cabling includes 24-pin ATX, 4+4 CPU, one 6+2 PCIe, 4 SATA and 2 Molex connectors. Active cooling with a 120 mm top fan, noise ~12 dB. Input 220–240 V, protection against overpower and active PFC. Suitable for desktop PC builds.

## Long description

TACENS Mars Gaming MPB550SI is an ATX power supply unit with 550 W total output and 80 PLUS Bronze efficiency. It provides active PFC and overpower protection, fixed (non-modular) cabling including a 24-pin ATX motherboard connector, 4+4 CPU connector, one 6+2 PCIe connector, four SATA and two Molex peripheral connectors. The unit uses a top-mounted 120 mm fan for active cooling and is intended for desktop PC builds with 220–240 V AC input.
Advantages
The power supply delivers up to 550 W with approximately 90% efficiency under typical loads and includes active power factor correction to improve power quality. Its single +12V rail supplies the majority of the output power, and built-in overpower protection helps prevent damage from excessive loads. The compact ATX form factor and top 120 mm fan provide a balance of cooling performance and low noise (around 12 dB).
Suitable for
Home or office desktop PCs
Entry-level and mid-range gaming builds
Systems requiring a single +12V rail and standard peripheral connectors
Key specifications
Total power: 550 W
Efficiency: 90% (80 PLUS Bronze)
Cooling: Active, 120 mm top fan
Form factor: ATX
Input voltage: 220–240 V AC, 47–63 Hz
Power factor correction: Active PFC
Protection: Over power
Output currents: +12V up to 45.5 A, +5V up to 18 A, +3.3V up to 18 A, +5Vsb up to 2.5 A, -12V up to 0.3 A
Combined power rails: +12V 546 W, +5V/+3.3V each up to 100 W
Cabling: Non-modular
Connectors: 24-pin ATX, 4+4 CPU, 6+2 PCIe (1), SATA (4), Molex 4-pin (2)
Dimensions (WxHxD): 150 x 85 x 145 mm
Weight: 1.4 kg
Noise level: ~12 dB
How to use
Install the TACENS Mars Gaming MPB550SI into a standard ATX power supply bay in your desktop case, aligning the mounting holes and securing the unit with screws. Connect the 24-pin ATX cable to the motherboard, attach the 4+4 CPU connector to the CPU power header, and plug the PCIe, SATA and Molex connectors to your components as required. Ensure AC input matches 220–240 V and switch on the system after all power connections are secured. Verify successful boot and stable operation under load.
Usage recommendations
For reliable operation, use this PSU in systems that do not exceed its 550 W rating and ensure adequate case ventilation. Regularly check connector seating and dust accumulation on the 120 mm fan; keep the PSU in a well-ventilated area and avoid blocking the fan intake to maintain efficiency and low noise.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 550 W |
| Efficiency | 90 % |
| Power Factor Correction (PFC) type | Active |
| Power protection features | Under voltage, Short circuit, Over voltage, Over power, Over current |
| Combined power (+3.3V) | 100 W |
| Combined power (+12V) | 546 W |
| Combined power (+5V) | 100 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 12.5 W |
| Max output current (+3.3V) | 18 A |
| Max output current (+12V) | 45.5 A |
| Max output current (+5V) | 18 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 2.5 A |
| Input current | 5 |
| AC input frequency | 47 - 63 |
| AC input voltage | 220 - 240 |

### Ports & interfaces

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

### Performance

| Feature | Value |
|---|---|
| Purpose | PC |
| 80 PLUS certification | 80 PLUS Bronze |
| Noise level | 12 dB |
| Power supply unit (PSU) form factor | ATX |

### Design

| Feature | Value |
|---|---|
| Fan diameter | 120 mm |
| Number of fans | 1 fan(s) |
| Cooling type | Active |
| Fan location | Top |
| Product colour | Black |

### Certificates

| Feature | Value |
|---|---|
| Certification | CE, RoHS, TUV |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 1.4 kg |
| Height | 85 mm |
| Width | 150 mm |
| Depth | 145 mm |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 1596 g |
| Package depth | 240 mm |
| Package height | 125 mm |
| Package width | 205 mm |

## FAQ

### How much does the TACENS Mars Gaming MPB550SI 550 W PSU cost, and is it available for purchase?

The price is 43.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 18 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 25.06.2026 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 TACENS 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 TACENS 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.

### Where can I download the instructions for TACENS Mars Gaming MPB550SI 550 W 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

https://aio.lv/img/cache/product/11269660/64819441_large.webp