# Memory Module HP 4GB DDR4 2133MHz

**URL:** https://aio.lv/en/product--hp-840821-001--444344
**Data updated:** 2026-01-13 15:23 (EET)
**Category:** Memory (RAM)
**Manufacturer:** HP
**Manufacturer code:** 840821-001
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 149.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 123.55 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hp-840821-001--444344

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.07.2026 | free |
| Pickup points | 27.07.2026 | 1.99 EUR |
| Courier delivery to door | 27.07.2026 | 4.99 EUR |

## Summary description

The HP 4GB DDR4 2133MHz memory module is designed for PC and server use. It features a 288-pin DIMM form factor, ensuring compatibility with a wide range of systems. With a clock speed of 2133 MHz and CAS latency of 15, this memory module provides reliable performance for multitasking and demanding applications. The sleek black and green design adds a modern touch to your setup.

## Long description

The HP 4GB DDR4 2133MHz memory module is a single 4 GB DIMM designed for desktop PCs and compatible servers. It uses DDR4 technology with a 288-pin DIMM form factor and runs at an effective clock speed of 2133 MHz with a CAS latency of 15. The module’s black and green appearance reflects HP’s reference styling while providing a compact memory upgrade that supports everyday multitasking, application responsiveness and system stability when added to compatible motherboards that accept unbuffered DDR4 DIMMs.
Advantages
This 4 GB DDR4 2133 MHz module delivers a balance of capacity and power efficiency compared with older DDR3 modules, reducing overall system power draw while offering improved data transfer rates at the specified clock. The 288-pin DIMM physical design ensures broad compatibility with motherboards that support standard DDR4 desktop memory, and the CAS latency of 15 provides predictable, low-latency operation for common office and home workloads.
Suitable for
General-purpose desktop PCs requiring a low-cost memory upgrade
Office workstations running productivity software and web browsing
Home systems for media playback, light photo editing and multitasking
Servers or compact systems that explicitly support unbuffered DDR4 288-pin DIMMs at 2133 MHz
Key specifications
Capacity: 4 GB
Memory type: DDR4
Clock speed: 2133 MHz
CAS latency: CL15
Form factor: 288-pin DIMM
Module colour: Black and Green
How to use
Power off the computer and disconnect it from the power source before installing the memory module. Open the system case to access the DIMM slots, consult the motherboard manual to identify the correct slot configuration, and align the module’s keyed notch with the slot. Firmly press the module into the slot until the retention clips engage. Reassemble the case, reconnect power, and start the system. Verify the new memory is recognised in the BIOS/UEFI or operating system system information tools.
Usage recommendations
Install modules in matched pairs when possible to enable dual-channel operation on motherboards that support it. Check the motherboard or system documentation for maximum supported memory capacity and supported memory speeds; when mixing modules of different speeds or sizes, the system may default to the lowest common speed.

## Specifications

### Features

| Feature | Value |
|---|---|
| Internal memory | 4 GB |
| Internal memory type | DDR4 |
| Memory clock speed | 2133 MHz |
| Memory form factor | 288-pin DIMM |
| ECC | No |
| CAS latency | 15 |
| Component for | PC/Server |
| Memory layout (modules x size) | 1 x 4 |
| Product colour | Black, Green |
| Buffered memory type | Unregistered (unbuffered) |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 84733020 |

## FAQ

### How much does the Memory Module HP 4GB 840821-001 cost, and is it available for purchase?

The price is 149.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 22.07.2026 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 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: internal memory, internal memory type, memory clock speed, memory form factor, 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.

## Image

https://aio.lv/img/cache/product/444344/62351238_large.webp