GIGABYTE P550B 550 W ATX power supply

Name: Power supply unit GIGABYTE P550B GP-P550B
Brand: GIGABYTE
SKU: 3553756
Price: 43.99 EUR
Availability: InStock

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Power supply unit GIGABYTE P550B ATX 550 W, 80 PLUS Bronze, 120 mm fan, 20+4 pin, 6×SATA, 2×PCIe

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Short description

GIGABYTE P550B is an ATX power supply delivering 550 W total power with 80 PLUS Bronze efficiency and active PFC (power factor 0.9). It features a 120 mm HDB fan (top), non-modular cabling, 20+4 pin motherboard connector, 4+4 CPU connector, two 6+2 PCIe connectors, six SATA and three Molex ports. Designed for desktop PCs, it offers multiple protections, 16 ms hold-up time and MTBF 100,000 h for reliable system operation and easy component connectivity.

Available at price 43.99 €: 100 pcs.

Total available for order: 471 pcs.

Warranty: 2 Years

SKU: 3553756

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Deliver the order:

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to the Customer Service Center at Kengaraga 2b, Riga

30.06.2026 {{selectedOffer.officeDeliveryString}}

free

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Customer service center

2b. Kengaraga str., Riga, Latvia, LV-1063

30.06.2026 {{selectedOffer.officeDeliveryString}}

free

Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!

03.07.2026 {{selectedOffer.courierDeliveryString}}

From 4.99 € (Weight: 2.02 kg)

Parcel couriers

Latvijas Pasts pakomāts / Unisend / DPD Paku skapis / Omniva / Venipak Pickup / Venipak Locker / Latvijas Pasts nodaļa

03.07.2026 {{selectedOffer.parcelStationDeliveryString}}

From 1.99 €

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Payment Methods:

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Product information

Description

The power supply is 80 PLUS Bronze certified, delivering up to 85% efficiency at 50% load to reduce energy waste, lower heat generation and decrease fan noise. It uses a single +12V rail for stable power delivery and compatibility with a wide range of PC hardware. The unit features flat cables to reduce clutter inside the case and improve airflow, and a 120mm hydraulic bearing fan with automatic speed control for balanced cooling and quiet operation. Multiple built-in protections and international safety certifications ensure stable and safe system operation.

Advantages

80 PLUS Bronze certification improves energy efficiency and reduces operating temperature. Flat cables simplify cable management and enhance internal airflow. The 120mm hydraulic bearing fan offers quiet operation and longer service life due to its robust bearing design. A single +12V rail provides consistent power output and easier cable connections. Comprehensive protection circuits (OCP, OTP, OVP, OPP, UVP, SCP) increase system reliability.

Key specifications

Certification: 80 PLUS Bronze (≈85% efficiency at 50% load)
Fan: 120 mm Silent Hydraulic Bearing (automatic speed control)
Cables: Flat cable design for improved airflow
Output topology: Single +12V rail
Protections: OCP, OTP, OVP, OPP, UVP, SCP
Designed for compatibility with common PC hardware and overclocking

How to use

Install the power supply into the PC case following the case and PSU mounting guidelines, connect the main 24‑pin ATX and 4/8‑pin CPU power connectors, and attach PCIe, SATA and peripheral connectors as required. Route the flat cables to minimize obstruction to fans and airflow. After connecting components, power on the system and verify stable operation. The fan speed will adjust automatically based on detected power and temperature conditions.

Recommendations

Use this PSU in cases with adequate ventilation and ensure cables are routed to maintain clear airflow paths. Verify that the unit’s wattage meets the total system power requirements, and keep drivers and firmware up to date for overall system stability.

Specifications

Total power:: 550 W
Efficiency:: 85 %
Motherboard power connector:: 20+4 pin ATX
80 PLUS certification:: 80 PLUS Bronze
Fan diameter:: 120 mm
Product colour:: Black

All features

Power

Total power:: 550 W
Efficiency:: 85 %
Power Factor Correction (PFC) type:: Active
Hold time:: 16 ms
Power protection features:: Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage
Power factor:: 0.9
Combined power (+3.3V):: 108 W
Combined power (+12V):: 522 W
Combined power (+5V):: 108 W
Combined power (-12V):: 3.6 W
Combined power (+5Vsb):: 15 W
Max output current (+3.3V):: 18 A
Max output current (+12V):: 43.5 A
Max output current (+5V):: 15 A
Max output current (-12V):: 0.3 A
Max output current (+5Vsb):: 3 A
Input current:: 8 - 4
AC input frequency:: 50 - 60
AC input voltage:: 100 - 240

Ports & interfaces

Motherboard power connector:: 20+4 pin ATX
Floppy disk drive connector:: Yes
PCI Express connector:: Yes
Floppy drive power connector:: 1
Number of SATA power connectors:: 6
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:: Non-Modular
Motherboard power cable length:: 550 mm
SATA power cable length:: 500
CPU power cable length:: 600 mm
Peripheral (Molex) power cable length:: 500
PCI Express power cable length:: 550 mm

Performance

Purpose:: PC
80 PLUS certification:: 80 PLUS Bronze
Mean time between failures (MTBF):: 100000 h
Bearing technology:: HDB
ATX version:: 2.31
Power supply unit (PSU) form factor:: ATX

Design

Fan diameter:: 120 mm
Number of fans:: 1 fan(s)
Cooling type:: Active
Fan location:: Top
On/off switch:: Yes
Product colour:: Black

Weight & dimensions

Height:: 86 mm
Width:: 150 mm
Depth:: 140 mm

Logistics data

Harmonized System (HS) code:: 84733020

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Instructions

gigabyte-GP-P550B-3553756.pdf

Description

Instructions

gigabyte-GP-P550B-3553756.pdf

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Warehouse	Stock	Delivery to the store	Store Price
WH115	100	30.06.2026	43.99 € Best price
EU86	16	30.06.2026	45.49 €
EU85	20	30.06.2026	45.49 €
BT19	20	Monday Best delivery	45.99 €
EU3	59	30.06.2026	46.49 €
BT5	8	Tuesday	47.99 €
EU16	8	30.06.2026	50.99 €
WH320	59	30.06.2026	50.99 €
WH337	1	30.06.2026	52.49 €
WH94	59	30.06.2026	52.99 €

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Available only for legal entities
Warehouse	Stock	Delivery to the store	Store Price
WH109	118	14.07.2026	52.99 €
EU6	3	30.06.2026	67.99 €

43.99 €

Stock: 100

Delivery Date: 30.06.2026

Warehouse: WH115

45.49 €

Stock: 16

Delivery Date: 30.06.2026

Warehouse: EU86

45.49 €

Stock: 20

Delivery Date: 30.06.2026

Warehouse: EU85

45.99 €

Stock: 20

Delivery Date: Monday Best delivery

Warehouse: BT19

46.49 €

Stock: 59

Delivery Date: 30.06.2026

Warehouse: EU3

47.99 €

Stock: 8

Delivery Date: Tuesday

Warehouse: BT5

50.99 €

Stock: 8

Delivery Date: 30.06.2026

Warehouse: EU16

50.99 €

Stock: 59

Delivery Date: 30.06.2026

Warehouse: WH320

52.49 €

Stock: 1

Delivery Date: 30.06.2026

Warehouse: WH337

52.99 €

Stock: 59

Delivery Date: 30.06.2026

Warehouse: WH94

Available only for legal entities

52.99 €

Stock: 118

Delivery Date: 14.07.2026

Warehouse: WH109

67.99 €

Stock: 3

Delivery Date: 30.06.2026

Warehouse: EU6

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Customer questions

FAQ

How much does the GIGABYTE P550B 550 W ATX power supply cost, and is it available for purchase?

The price is 43.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 471 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 GIGABYTE 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 GIGABYTE 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

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.

Where can I download the instructions for GIGABYTE P550B 550 W ATX power supply?

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.

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