# Power supply unit HP 865438-B21 800 W, AC 200–240 V, 96% efficiency, grey

**URL:** https://aio.lv/en/product--hp-865438-b21--10456748
**Data updated:** 2026-03-11 11:52 (EET)
**Category:** Server Parts & Components
**Manufacturer:** HP
**Manufacturer code:** 865438-B21
**EAN:** 190017072746
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 269.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 223.13 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hp-865438-b21--10456748

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

HP 865438-B21 is a 800 W server power supply unit with AC input 200–240 V and 96% efficiency. Designed for reliable power delivery in compatible HP systems, it supports stable operation under load, reduces energy loss with high efficiency and comes in a grey housing. Suitable for data centers, rack servers and enterprise environments requiring redundant or high-capacity PSUs.

## Long description

HP 865438-B21 is a server power supply unit rated at 800 W with an AC input range of 200–240 V and a stated efficiency of 96%. It is built for use in compatible HP systems where continuous, high-capacity power delivery is required. The unit’s grey housing conforms to rack-mounted server aesthetics and is intended for installation in data centers, enterprise server rooms and other environments that demand reliable, redundant power.
Advantages
The 800 W output and high conversion efficiency reduce energy losses and lower operating costs compared with lower-efficiency supplies. Its wide AC input range supports international mains voltages within the 200–240 V band and maintains stable output under typical server load conditions. The compact, industry-standard form factor and grey finish simplify integration into existing racks and chassis designed for compatible HP modules.
Suitable for
Rack-mounted servers in data centers and colocation facilities
Enterprise server rooms requiring redundant or hot-swappable power supplies
High-availability applications with sustained load demands
Environments where high efficiency is prioritized to reduce heat and energy costs
Key specifications
Output power: 800 W
AC input voltage: 200–240 V
Efficiency: 96%
Form factor: server-compatible hot-swap module (grey housing)
Cooling: active cooling compatible with server chassis airflow (internal fan)
How to use
Install the power supply into a compatible HP server or chassis following the server manufacturer’s installation procedure. Ensure the system is powered down or that the chassis supports hot-swap insertion if replacing an active module. Connect the AC mains to a correctly rated power distribution unit or outlet within the 200–240 V range and verify proper seating and locking of the module. After installation, confirm that the server recognizes the power supply and monitor status indicators or management software for normal operation.
Usage recommendations
For reliable long-term operation, use this PSU in systems with compatible hot-swap bays and maintain adequate rack airflow. Match the supply to system power requirements and consider redundant configurations for critical workloads. Regularly monitor temperature and status LEDs and replace units showing fault indicators to maintain availability.

## Specifications

| Feature | Value |
|---|---|
| Product colour | Grey |
| Efficiency | 96 % |
| AC input voltage | 200 - 240 |
| Total power | 800 W |
| Harmonized System (HS) code | 84733020 |

## FAQ

### How much does the HP 865438-B21 800 W power supply unit cost, and is it available for purchase?

The price is 269.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 9 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 13.07.2026 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, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can HP 865438-B21 800 W power supply unit be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 HP 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 HP 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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