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header-product Montech APX550 power supply unit 550 W 20+4 pin ATX ATX Black
39.99 €

Montech APX550 power supply unit 550 W 20+4 pin ATX ATX Black

Fast shipping
Montech APX550 power supply unit APX550 Photo 1
Montech APX550 power supply unit APX550 Photo 2
Montech APX550 power supply unit APX550 Photo 3
Montech APX550 power supply unit APX550 Photo 4
Montech APX550 power supply unit APX550 Photo 5
Montech APX550 power supply unit APX550 Photo 1
Montech APX550 power supply unit APX550 Photo 2
Montech APX550 power supply unit APX550 Photo 3
Montech APX550 power supply unit APX550 Photo 4
Montech APX550 power supply unit APX550 Photo 5
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Short description

Montech APX550. Total power: 550 W, AC input voltage: 100 - 240 V, AC input frequency: 50/60 Hz. Motherboard power connector: 20+4 pin ATX. Purpose: PC, Power supply unit (PSU) form factor: ATX, 80 PLUS certification: 80 PLUS White. Product colour: Black, Fan diameter: 12 cm, Number of fans: 1 fan(s). Compliance certificates: CB, CE, EAC, Federal Communications Commission (FCC), RCM, RoHS, UKCA, cTUVus
Available at price 39.99 €: 13 pcs.
Total available for order: 26 pcs.
Warranty: 3 Years
SKU: 11675071
Manufacturer: Montech
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
Monday {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
17.09.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 1.82 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
17.09.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
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Product information

Description

The Montech APX550 power supply unit delivers up to 550 W of continuous power in an ATX form factor designed for standard desktop PCs. It accepts a wide AC input range (100–240 V) with 50/60 Hz frequency compatibility and provides a 20+4 pin ATX motherboard connector. The unit comes in a black finish, includes a single 120 mm fan for thermal management, and holds 80 PLUS White certification for basic efficiency standards. Compliance certificates include CB, CE, EAC, FCC, RCM, RoHS, UKCA and cTUVus.

Advantages

The Montech APX550 combines a compact ATX design with a 550 W total power rating suitable for typical office, home and entry-level gaming systems. The broad AC input range supports international voltage standards, while the 20+4 pin ATX connector ensures compatibility with a wide range of motherboards. A single 120 mm fan provides active cooling without adding excessive noise, and the black exterior integrates unobtrusively into most PC builds. The 80 PLUS White certification verifies baseline energy efficiency and the listed safety and regulatory certificates confirm compliance with common regional requirements.

Suitable for

  • Office and home desktop computers
  • Entry-level or budget gaming builds
  • System upgrades where a reliable 550 W supply is required
  • Small form factor ATX cases that accept standard ATX PSUs

Key specifications

  • Total power: 550 W
  • AC input voltage: 100–240 V
  • AC input frequency: 50/60 Hz
  • Motherboard connector: 20+4 pin ATX
  • Form factor: ATX
  • Efficiency certification: 80 PLUS White
  • Cooling: 1 × 120 mm fan
  • Colour: Black
  • Compliance: CB, CE, EAC, FCC, RCM, RoHS, UKCA, cTUVus

How to use

Install the Montech APX550 into a compatible ATX PSU bay in your PC case, aligning screw holes and securing the unit with the supplied screws. Connect the 20+4 pin ATX connector to the motherboard main power socket, and attach any additional peripheral or CPU power connectors if present and required by your system. Ensure the AC mains cable is unplugged during installation. After all connections are secure, plug the AC cable into a properly grounded outlet and switch on the system while observing normal safety precautions.

Usage recommendations

For stable operation, match the Montech APX550 to systems whose combined component power draw remains comfortably below 550 W. Maintain adequate case airflow to complement the PSU's single 120 mm fan, and use a grounded power source or surge protector to reduce risk from voltage spikes. Periodically clean dust from the fan and vents to preserve cooling efficiency and prolong service life.

Specifications

80 PLUS certification:
80 PLUS White
Power supply unit (PSU) form factor:
ATX
Purpose: What the product is used for.
PC
Peripheral (Molex) power connectors (4-pin): White 4-pinned connector used to connect a peripheral to the power supply.
3
Motherboard power connector: The way in which the motherboard is connected to the power supply.
20+4 pin ATX
AC input voltage: The voltage of the AC electricity that is inputted into the product.
100 - 240
Total power: The total power that is needed by the device, or the total power produced by the device.
550 W
All features

Weight & dimensions

Height: The measurement of the product from head to foot or from base to top.
86 mm
Depth: The distance from the front to the back of something.
140 mm
Width: The measurement or extent of something from side to side.
150 mm

Certificates

Compliance certificates: Indicates which regulatory, safety, and environmental standards the product complies with, as verified by recognized authorities or certification bodies.
CB, CE, cTUVus, UKCA, RoHS, RCM, Federal Communications Commission (FCC), EAC

Operational conditions

Operating temperature (T-T): The minimum and maximum temperatures at which the product can be safely operated.
0 - 40

Design

Number of fans: The quantity of fans (apparatus with rotating blades that creates a current of air for cooling or ventilation).
1 fan(s)
Fan diameter: The size of the fan, measured by the distance from one side of the fan to the other, via a straight line going through the middle of the fan.
120 mm
Product colour: The colour e.g. red, blue, green, black, white.
Black

Performance

Bearing technology:
HDB
80 PLUS certification:
80 PLUS White
Power supply unit (PSU) form factor:
ATX
Purpose: What the product is used for.
PC

Ports & interfaces

CPU power connector (4+4 pin):
Yes
PCI Express power connectors (6+2 pin):
2
Peripheral (Molex) power connectors (4-pin): White 4-pinned connector used to connect a peripheral to the power supply.
3
Number of SATA power connectors:
6
Motherboard power connector: The way in which the motherboard is connected to the power supply.
20+4 pin ATX

Power

Power protection features: Features that protect the device against power problems e.g. overload.
Over voltage, Short circuit, Overheating, Under voltage, Over power, Over current
Max output current (-12V):
0.3 A
Max output current (+5V):
18 A
Max output current (+12V):
45.8 A
Max output current (+3.3V):
18 A
Combined power (+5Vsb):
2.5 W
Combined power (-12V):
3.6 W
Combined power (+5V):
100 W
Combined power (+12V):
549.6 W
Combined power (+3.3V):
100 W
Input current:
12
AC input frequency:
50/60
AC input voltage: The voltage of the AC electricity that is inputted into the product.
100 - 240
Total power: The total power that is needed by the device, or the total power produced by the device.
550 W

Description

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Stock data
Warehouse Stock Delivery to the store Store Price
BT19 13 Monday Best delivery
Fast shipping
39.99 € Best price
WH354 13 25.09.2026
53.49 €
Fast shipping
39.99 €
Stock: 13
Delivery Date: Monday Best delivery
Warehouse: BT19
53.49 €
Stock: 13
Delivery Date: 25.09.2026
Warehouse: WH354

Customer reviews

Customer questions

FAQ

How much does the Montech APX550 power supply unit APX550 cost, and is it available for purchase?

The price is 39.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 26 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 Monday 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 Montech 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 Montech 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: 80 plus certification, power supply unit (psu) form factor, purpose, peripheral (molex) power connectors (4-pin), motherboard power connector, ac input voltage, total power, 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.
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14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.