# Power supply Dell M821J 525W APFC UPC – server PSU 525W, APFC

**URL:** https://aio.lv/en/product--dell-m821j--605517
**Data updated:** 2026-01-13 15:25 (EET)
**Category:** Other Repair Parts
**Manufacturer:** Dell
**Manufacturer code:** M821J
**EAN:** 5711045332999
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 133.49 €
**Prices and availability valid until:** 2026-08-02 23:59
**Price without VAT (21%):** 110.32 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dell-m821j--605517

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 5.55 EUR |

## Summary description

Dell M821J is a 525W power supply unit with APFC and UPC designed for server use. It delivers stable 525 watts of power for compatible Dell systems, supports active power factor correction for improved efficiency and cleaner power delivery, and is intended for data center or enterprise environments where reliable, continuous power is required.

## Long description

Dell M821J is a 525W power supply unit designed for server environments. It provides a continuous 525 watts of output and includes active power factor correction (APFC) and unit power control (UPC) functions to improve electrical efficiency and reduce harmonic distortion. The PSU is intended for use in compatible Dell servers and enterprise systems where stable, uninterrupted power delivery is essential for reliable operation.
Advantages
The power supply delivers a stable 525W output suitable for typical server workloads and offers APFC to improve power factor and efficiency under varying loads. The inclusion of UPC contributes to consistent voltage regulation and cleaner power, helping to protect internal server components. The design supports enterprise reliability requirements, with thermal and electrical characteristics matched to rack and tower server operation.
Suitable for
 Enterprise and data center servers requiring 525W redundant or single supply units
 Replacement units for compatible Dell systems in production environments
 Workloads that need continuous, stable power such as virtualization hosts and database servers
Key specifications
 Rated output power: 525 watts continuous
 Power factor correction: Active PFC (APFC)
 Voltage regulation: designed for stable DC output suitable for server components
 Cooling: forced-air cooling compatible with server chassis airflow (fan-assisted)
 Form factor: server power supply form factor for compatible enterprise systems
 Operating environment: designed for data center and enterprise ambient conditions
How to use
Install the power supply into a compatible Dell server slot following the server manufacturer’s mechanical and electrical guidelines. Ensure the system is powered down and disconnected from mains before removal or installation. After seating the unit and securing it mechanically, connect the mains input and verify system power-on. Monitor system LEDs and management interfaces for power status and fault indications during initial startup and regular operation.
Usage recommendations
Use this 525W APFC server PSU in properly ventilated racks or chassis, maintain recommended ambient temperatures, and ensure power distribution and redundancy meet your availability requirements. Regularly inspect connections and monitor for warnings via server management tools to ensure continuous, reliable operation.

## FAQ

### How much does the Power supply Dell M821J 525W cost, and is it available for purchase?

The price is 133.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 20.07.2026 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 Dell 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 Dell 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

## Image

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