# Power Supply Unit Chieftec EON ZPU-400S 400W 20+4 pin ATX Black

**URL:** https://aio.lv/en/product--chieftec-0753263078605--11613890
**Data updated:** 2026-03-29 16:06 (EEST)
**Category:** Power Supplies (PSU)
**Manufacturer:** CHIEFTEC
**Manufacturer code:** 0753263078605
**EAN:** 0753263078605
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 42.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 35.12 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--chieftec-0753263078605--11613890

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Pickup points | 24.07.2026 | 1.99 EUR |
| Courier delivery to door | 24.07.2026 | 4.99 EUR |

## Summary description

The Chieftec EON ZPU-400S is a 400W ATX power supply unit with a 20+4 pin motherboard connector. It features an AC input voltage of 200-240V and a frequency of 50Hz. Designed for PCs and servers, it has a fan diameter of 12 cm and comes in black. It is 80 PLUS certified, ensuring energy efficiency.

## Long description

The Chieftec EON ZPU-400S 400W 20+4 pin ATX Black is a compact ATX power supply designed for desktop PCs and small servers. It provides up to 400 W of continuous output, supports AC input of 200–240 V at 50 Hz and uses a 20+4 pin motherboard connector for compatibility with a wide range of systems. The unit is 80 PLUS certified for energy efficiency, housed in a steel chassis coated in black, and cooled by a 120 mm fan for quieter operation.
Advantages
The EON ZPU-400S offers a balance of efficiency and basic protection features suitable for mainstream systems. Its 80 PLUS certification helps reduce wasted power and heat compared with non-certified units, while the native 20+4 pin connector ensures straightforward installation on older and newer motherboards alike. The steel construction and black finish provide durable protection and a neutral appearance that fits most builds. The 120 mm fan delivers cooling with lower noise under typical loads.
Suitable for
Home desktop PCs with modest power requirements
Office workstations and business PCs
Entry-level gaming systems without high-end graphics cards
Compact server or NAS setups requiring an ATX power supply
Key specifications
Total power: 400 W
Input voltage and frequency: 200–240 V, 50 Hz
Motherboard power connector: 20+4 pin ATX
Certification: 80 PLUS (230 V EU efficiency standard)
Cooling: 120 mm fan
Construction and colour: steel chassis, black finish
Weight: 1.15 kg
How to use
Install the Chieftec EON ZPU-400S into a compatible ATX case following standard safety procedures: disconnect mains power, ground yourself to avoid static discharge, and mount the unit securely to the case with the supplied screws. Connect the 20+4 pin ATX cable to the motherboard main power socket and attach required peripheral connectors to drives and other components. Verify that the AC mains voltage matches the unit's 200–240 V rating before powering on. Allow adequate airflow around the PSU intake and exhaust to maintain stable temperatures.
Использование и уход
For reliable operation, keep the PSU and system interior free of dust, ensure case ventilation is not obstructed, and avoid operating the unit beyond its rated load. If the system exhibits instability or unusual noise, power down and inspect connections and cooling before resuming use.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 400 W |
| Power Factor Correction (PFC) type | Active |
| Power protection features | Surge protection, Surge and inrush, Short circuit |
| Power factor | 0.9 |
| Combined power (-12V) | 4.8 W |
| Combined power (+5Vsb) | 12.5 W |
| Max output current (+3.3V) | 20 A |
| Max output current (+5V) | 20 A |
| Max output current (-12V) | 0.4 A |
| Max output current (+5Vsb) | 2.5 A |
| Input current | 3 |
| AC input frequency | 50 |
| AC input voltage | 200 - 240 |
| Max output current (+12V1) | 30 A |
| Maximum input current (@220V) | 3 A |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 4 |
| Peripheral (Molex) power connectors (4-pin) | 2 |
| ATX power connector (20+4 pin) | Yes |
| CPU power connector (4+4 pin) | Yes |
| PCI Express power connectors (6+2 pin) | 1 |
| Cabling type | Non-Modular |
| Motherboard power cable length | 550 mm |
| SATA power cable length | 550, 600 |
| Peripheral (Molex) power cable length | 450, 150 |
| EPS power connector (4+4 pin) | Yes |

### Performance

| Feature | Value |
|---|---|
| Purpose | PC/Server |
| 80 PLUS certification | 80 PLUS |
| ATX version | 2.3 |
| Supported motherboard form factors | ATX |
| Power supply unit (PSU) form factor | ATX |

### Design

| Feature | Value |
|---|---|
| Fan diameter | 120 mm |
| On/off switch | Yes |
| Product colour | Black |

### Certificates

| Feature | Value |
|---|---|
| Compliance certificates | CB, CE, EAC, RoHS |

### Technical details

| Feature | Value |
|---|---|
| Sustainability certificates | ErP |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 1.15 kg |
| Height | 86 mm |
| Width | 150 mm |
| Depth | 140 mm |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 1400 g |
| Package type | Box |

### Logistics data

| Feature | Value |
|---|---|
| Warranty period | 2 year(s) |

## FAQ

### How much does the Power Supply Unit Chieftec EON ZPU-400S cost, and is it available for purchase?

The price is 42.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 500 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 21.07.2026 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. 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 CHIEFTEC 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 CHIEFTEC 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, 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 Power Supply Unit Chieftec EON ZPU-400S?

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/11613890/66794420_large.webp