D-Link DWA-121 network card DWA-121

Name: Wireless USB Network Adapter D-Link DWA-121
Brand: D-Link
SKU: 3999802
Price: 13.99 EUR
Availability: OutOfStock

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Wireless USB Network Adapter D-Link DWA-121 — 150 Mbit/s, 2.4 GHz, Wi‑Fi 4 (802.11n), Integrated Antenna, Black

Short description

D-Link DWA-121 is a compact wireless USB network adapter providing up to 150 Mbit/s on the 2.4 GHz single band using Wi‑Fi 4 (802.11n). It connects via USB and features an integrated antenna, backward compatibility with 802.11b/g, and USB‑powered operation. Suited for adding WLAN connectivity to desktops or laptops for web browsing, streaming and basic file transfer.

Warranty: 2 Years

SKU: 3999802

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Product information

Description

The D-Link Wireless USB Network Adapter DWA-121 is a compact USB dongle that adds wireless LAN connectivity to desktops and laptops. Supporting Wi‑Fi 4 (802.11n) on the 2.4 GHz single band, the adapter delivers up to 150 Mbit/s and is backward compatible with 802.11b/g. Its integrated antenna and USB-powered operation make it a space-saving option for web browsing, streaming and basic file transfers without the need for an internal WLAN card.

Advantages

The adapter provides a straightforward way to enable wireless networking via a USB port and supports data rates up to 150 Mbit/s on the 2.4 GHz band. Compact dimensions and an integrated antenna reduce clutter and allow permanent connection without external aerials. Backward compatibility with older 802.11b/g devices ensures interoperability with existing routers and access points, while WPA/WPA2 support offers standard wireless encryption for secure network access.

Suitable for

Adding Wi‑Fi to desktop PCs without built‑in wireless
Upgrading older laptops to Wi‑Fi 4 (802.11n) performance
Basic web browsing and streaming in single‑band 2.4 GHz environments
Light file transfers and everyday network tasks

Key specifications

Wireless standard: IEEE 802.11n (Wi‑Fi 4), backward compatible with 802.11g and 802.11b
Frequency band: 2.4 GHz single band
Maximum data rate: up to 150 Mbit/s
Host interface: USB (USB‑powered)
Antenna: integrated
Colour: black
Security: WPA and WPA2 encryption support

How to use

Insert the DWA-121 into an available USB port on your desktop or laptop. Install any required drivers or utilities provided by the operating system or D-Link, then use the system’s wireless network manager to scan for available networks. Select your access point or router, enter the network passphrase if the network is secured, and connect. The adapter is USB‑powered and requires no external power supply.

Usage recommendations

Place the adapter in a USB port with a clear line of sight to the wireless router where possible and avoid locating it near large metal objects or sources of electromagnetic interference. Use WPA2 encryption for best security and maintain updated drivers to ensure compatibility and performance.

Specifications

Connectivity technology: The technology that enables connectivity of the device, e.g. wired or wireless.: Wireless
Interface: Interface ports to connect pieces of equipment. USB (Universal Serial Bus) has become the most popular wired interface to connect peripherals. USB 2.0 supports speeds up to 480 Mbit/s (USB 1: 12 Mbit/s). The interface FireWire is also known as the IEEE 1394 standard. Enhanced IDE (EIDE)is sometimes referred to as Fast ATA, Fast IDE or ATA-2.: WLAN
Host interface: Interface that enables a host controller to communicate with a driver.: USB
Maximum data transfer rate: The maximum speed with which data can be transmitted from one device to another.: 150 Mbit/s
Networking standards: The way in which the network is working, e.g. IEEE 802.11a, IEEE 802.11b, IEEE 802.11g.: IEEE 802.11b, IEEE 802.11g, IEEE 802.11n
Product colour: The colour e.g. red, blue, green, black, white.: Black

All features

Wi-Fi standards: The type of wireless local area network (LAN). It can be ad-hoc, where units in a network communicate peer-to-peer, or Infrastructure, where units communicate with each other via an access point A LAN interconnects computers in a small area e.g. home, school or office.: Wi-Fi 4 (802.11n), 802.11b, 802.11g
Pallet gross width:: 1200 mm
Pallet gross length:: 1100 mm
Shipping (inner) case width:: 295 mm
Shipping (inner) case length:: 435 mm
Shipping (inner) case height:: 295 mm
Shipping (inner) case gross weight:: 4780 g
Products per shipping (inner) case:: 80 pc(s)
Harmonized System (HS) code:: 85176990
Shipping (inner) case net weight:: 4080 g
Pallet gross weight (air):: 254440 g
Master (outer) cases per pallet (air):: 48 pc(s)
Products per pallet (air):: 3840 pc(s)
Pallet height (air):: 1995 mm
Pallet gross weight (sea):: 254440 g
Master (outer) cases per pallet (sea):: 48 pc(s)
Products per pallet (sea):: 3840 pc(s)
Pallet height (sea):: 1995 mm

Ports & interfaces

Connectivity technology: The technology that enables connectivity of the device, e.g. wired or wireless.: Wireless
Interface: Interface ports to connect pieces of equipment. USB (Universal Serial Bus) has become the most popular wired interface to connect peripherals. USB 2.0 supports speeds up to 480 Mbit/s (USB 1: 12 Mbit/s). The interface FireWire is also known as the IEEE 1394 standard. Enhanced IDE (EIDE)is sometimes referred to as Fast ATA, Fast IDE or ATA-2.: WLAN
Host interface: Interface that enables a host controller to communicate with a driver.: USB
Internal: The product is built in.: No

Bandwidth

Maximum data transfer rate: The maximum speed with which data can be transmitted from one device to another.: 150 Mbit/s

Network

Networking standards: The way in which the network is working, e.g. IEEE 802.11a, IEEE 802.11b, IEEE 802.11g.: IEEE 802.11b, IEEE 802.11g, IEEE 802.11n
Ethernet LAN: An Ethernet LAN (Local Area Network) interface is present, for a wired conection via a cable.: No

Wireless LAN features

Wi-Fi: Popular technology that allows an electronic device to exchange data or connect to the internet wirelessly using radio waves.: Yes
Wi-Fi band: The frequency bands the product features.: Single-band (2.4 GHz)
Top Wi-Fi standard: Connection of this device is done via Wi-Fi in a high standard.: Wi-Fi 4 (802.11n)

Antenna

Antenna type: Type of antenna, also known an aerial, e.g. external, internal.: Integrated
Frequency range:: 2.4 - 2.4835

Performance

Security algorithms: Security algorithms are used to provide authentication, cipher key generation, integrity and radio link privacy to users on mobile networks. The security algorithms supported are the ones that can be used with this product.: WPA2-PSK, WPA-EAP, WPA-PSK, WPA2-EAP
Mac operating systems supported: Mac operating systems e.g. OS X can be used with the device.: Yes

Design

Product colour: The colour e.g. red, blue, green, black, white.: Black

Weight & dimensions

Package weight: Weight of the packaged product.: 5 g
Height: The measurement of the product from head to foot or from base to top.: 6.1 mm
Width: The measurement or extent of something from side to side.: 14.3 mm
Depth: The distance from the front to the back of something.: 18.6 mm
Package depth: The distance from the front to the back of the packaging.: 138 mm
Package height: The distance from the top to the bottom of the packaging.: 20 mm
Package width: The distance from one side of the packaging to the other.: 138 mm

Power

Output voltage:: 5
USB powered: The device can be powered via a USB connection.: Yes

Operational conditions

Operating relative humidity (H-H):: 10 - 90
Storage temperature (T-T): The minimum and maximum temperatures at which the product can be safely stored.: -20 - 65
Operating temperature (T-T): The minimum and maximum temperatures at which the product can be safely operated.: 0 - 40

Certificates

Certification:: FCC B, IC, WPS

Other features

Compatible operating systems: List of desktop operating systems tested as compatible with this product.: Windows XP/Vista/7
Link/Act LED:: Yes

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Customer reviews

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Customer questions

FAQ

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 D-Link 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 D-Link 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: connectivity technology, interface, host interface, maximum data transfer rate, networking standards, 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.

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Wireless USB Network Adapter D-Link DWA-121 — 150 Mbit/s, 2.4 GHz, Wi‑Fi 4 (802.11n), Integrated Antenna, Black

Short description

Product information

Description

Advantages

Suitable for

Key specifications

How to use

Usage recommendations

Specifications

Ports & interfaces

Bandwidth

Network

Wireless LAN features

Antenna

Performance

Design

Weight & dimensions

Power

Operational conditions

Certificates

Other features

Description

Similar products

Product comparison

Customer reviews

Customer questions

What payment options are available?

Can this product be purchased for a company (with VAT)?

What is the warranty period?

Can the product be returned after purchase?

Where should I contact for warranty service?

How can I tell if this product suits my needs?