# SSD disk Western Digital 4 TB M.2 PCI Express 4.0 NVMe Black SN850X

**URL:** https://aio.lv/en/product--western-digital-wdbb9g0040bnc-wrsn--5036761
**Data updated:** 2026-01-13 21:28 (EET)
**Category:** Solid State Drives (SSD)
**Manufacturer:** Western Digital
**Manufacturer code:** WDBB9G0040BNC-WRSN
**EAN:** 0619659193454
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 1 573.49 €
**Prices and availability valid until:** 2026-08-03 23:59
**Price without VAT (21%):** 1 300.40 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--western-digital-wdbb9g0040bnc-wrsn--5036761

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.08.2026 | free |
| Pickup points | 06.08.2026 | 1.89 EUR |
| Courier delivery to door | 06.08.2026 | 4.99 EUR |

## Summary description

The Western Digital Black SN850X 4 TB SSD offers exceptional performance with read speeds up to 7300 MB/s and write speeds of 6600 MB/s. Designed for PC use, this M.2 PCIe 4.0 NVMe SSD provides ample storage capacity and fast data transfer rates, making it ideal for gaming and demanding applications.

## Long description

The Western Digital 4 TB M.2 PCI Express 4.0 NVMe Black SN850X is a high-capacity internal solid-state drive designed for desktop and laptop systems that support M.2 PCIe 4.0. Delivering read speeds up to 7300 MB/s and write speeds up to 6600 MB/s, this SSD combines large storage space with low-latency NVMe performance to handle large files, fast application loads, and demanding workloads.
Advantages
This M.2 PCIe 4.0 NVMe drive offers very high sequential read and write throughput, reducing load times and accelerating file transfers. The 4 TB capacity provides substantial space for games, multimedia libraries, and project files while maintaining compact M.2 form factor compatibility. Its NVMe protocol and PCIe 4.0 interface enable improved responsiveness compared with SATA-based drives and earlier PCIe generations.
Suitable for
 High-end gaming PCs and gaming laptops requiring fast game load times
 Content creation workflows: video editing, 3D rendering, and large project storage
 Software development and virtualization with large images and fast I/O needs
 General system drive for users seeking large capacity and high performance
Key specifications
 Form factor: M.2
 Interface: PCI Express 4.0, NVMe protocol
 Capacity: 4000 GB
 Maximum sequential read speed: up to 7300 MB/s
 Maximum sequential write speed: up to 6600 MB/s
How to use
Install the M.2 SSD into a compatible M.2 slot on a motherboard or laptop that supports PCIe 4.0 for optimal performance. Secure the drive with the mounting screw and, if required by the system, enable the NVMe drive in BIOS/UEFI or update firmware to the latest version. Initialize and format the drive within the operating system to create partitions and assign drive letters before use.
Usage recommendations
To achieve sustained peak performance, pair the drive with a system that supports PCIe 4.0 and ensure adequate cooling for the M.2 slot. Use it as a primary system or application drive for workloads that benefit from high sequential and random I/O. Regularly update firmware and maintain backups for important data.

## Specifications

### Features

| Feature | Value |
|---|---|
| SSD capacity | 4000 GB |
| SSD form factor | M.2 |
| Read speed | 7300 MB/s |
| Write speed | 6600 MB/s |
| Component for | PC |
| NVMe | Yes |
| Interface | PCI Express 4.0 |
| Windows operating systems supported | Windows 10, Windows 11, Windows 8.1 |
| M.2 SSD size | 2280 (22 x 80 mm) |

## FAQ

### How much does the SSD disk Western Digital 4 TB Black SN850X cost, and is it available for purchase?

The price is 1,573.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 03.08.2026 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, Leasing for legal entities. 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 Western Digital 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 Western Digital 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: ssd capacity, ssd form factor, read speed, write speed, 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/5036761/62377634_large.webp