# Power supply Samsung 3903-000849 12V 2A external adapter for compatible devices

**URL:** https://aio.lv/en/product--samsung-3903-000849--11170741
**Data updated:** 2026-02-14 19:34 (EET)
**Category:** Computer Component Accessories
**Manufacturer:** Samsung
**Manufacturer code:** 3903-000849
**EAN:** 5711045700606
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 5.78 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--samsung-3903-000849--11170741

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

External power supply Samsung model 3903-000849 providing 12V DC at 2A output. Designed as a replacement or spare adapter for compatible Samsung and third-party devices that require 12V/2A power. Compact external unit suitable for desktop or wall use, offering a straightforward plug-in power solution for modems, routers, small electronics and other peripherals.

## Long description

External power supply Samsung 3903-000849 delivers 12V DC at 2A in a compact external adapter designed as a replacement or spare power source for compatible Samsung and third-party devices. The adapter provides a stable low-voltage DC output suitable for modems, routers, small electronics and other peripherals that require a straightforward plug‑in supply. Its compact housing allows desktop placement or connection to a wall outlet using the integrated cable.
Advantages
The adapter offers a consistent 12V 2A output that supports continuous operation of connected equipment while minimizing voltage fluctuations. Its compact form factor and standard DC connector make it easy to replace existing adapters without altering device setup. Built to match common electrical characteristics of compatible devices, this external supply simplifies maintenance and reduces downtime when an original adapter is unavailable.
Suitable for
 Modems and home networking equipment
 Small routers and access points
 External hard drive enclosures and small NAS devices
 Portable electronics and chargers that accept 12V/2A input
 Replacement or spare power source for office peripherals
Key specifications
 Output voltage: 12V DC
 Output current: 2A
 Power rating: 24W
 Adapter type: External, plug‑in
 Connection: Standard DC barrel connector (check device polarity and size before use)
 Enclosure: Compact desktop/wall style suitable for limited spaces
How to use
Verify that your device accepts 12V DC at up to 2A and confirm the correct polarity and connector size before connecting. Plug the adapter into a suitable mains outlet and insert the DC connector into the device power input until it seats securely. Power on the device and observe normal startup behavior; if the device fails to power or shows abnormal operation, disconnect immediately and re-check compatibility. For continuous use, place the adapter in a well-ventilated area and avoid covering the enclosure.
Usage recommendations
Use this adapter only with devices that explicitly support a 12V DC, 2A input and matching connector polarity. Regularly inspect the cable and connector for wear, avoid exposing the adapter to moisture or extreme temperatures, and replace the unit if physical damage or overheating occurs.

## FAQ

### How much does the Power supply Samsung 3903-000849 12V 2A cost, and is it available for purchase?

The price is 6.99 € (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 09.07.2026 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 Samsung 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 Samsung 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