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Small black USB 3.0 Wi-Fi 6 adapter with fold-out antenna, 4.8 by 1.0 by 1.8 inches

Nineplus N21CA Wi-Fi 6 AX1800 USB 3.0 adapter

SKU CH-CDFZ-BHTPS

Adds Wi‑Fi 6 AX1800 dual‑band wireless to a Windows 10/11 desktop or laptop via USB 3.0 with a high‑gain antenna

  • Wi-Fi standardIEEE 802.11ac IEEE 802.11AX
  • Supported standardsIEEE 802.11ac IEEE 802.11AX
  • Wireless speed1,800 MB/s
  • Setup requirementsDesktop, Laptop,PC,Computer
  • Product colorBlack
  • Key features1,800 MB/s
  • Wi-Fi 6 AX1800 delivers up to 1800 Mbps wireless throughput
  • Dual-band 5 GHz and 2.4 GHz reaches 1201 Mbps and 574 Mbps respectively
  • USB 3.0 interface provides 5000 Mbps bus bandwidth for full Wi-Fi 6 speed
  • High-gain antenna boosts signal reception for stable desktop and laptop connections
  • Compact 4.8 in x 1.0 in x 1.8 in design avoids blocking adjacent USB ports

Nineplus N21CA AX1800 USB 3.0 Adapter

This USB 3.0 wireless adapter brings Wi-Fi 6 connectivity to Windows 10 and 11 desktops and laptops. It supports dual-band operation with a high-gain antenna for improved signal reception. The compact design avoids blocking adjacent ports. Driver installation is automatic on supported systems.

Upgrade from USB 2.0 or older Wi-Fi

Moving from a USB 2.0 adapter removes the 480Mbps interface bottleneck that caps Wi-Fi 6 performance. The USB 3.0 interface supports up to 5000Mbps bandwidth, letting the adapter reach its rated speeds. The jump is worth it when your router supports 802.11ax and you need faster throughput. It does not support Windows 7, Mac, Linux or Chromebook.

AX1800 dual-band capacity and headroom

The adapter delivers up to 1201Mbps on 5GHz and 574Mbps on 2.4GHz for a combined 1800Mbps link rate. This comfortably handles web browsing, gaming and 4K streaming on compatible networks. Performance will be limited by the USB 2.0 interface if plugged into an older port. It cannot serve devices requiring unsupported operating systems.

How it compares

Measured against everything we stock in Wi-Fi Cards & USB Adapters, at today’s prices. Recalculated every night.

Price $34.99
Pricier than about 78% of the 1,565 comparable items (median $18.99).

Specifications

Product
Brand nameNineplus
Model nameN21CA
Product colorBlack
Connectivity
Wi-Fi standardIEEE 802.11ac IEEE 802.11AX
Supported standardsIEEE 802.11ac IEEE 802.11AX
Wireless speed1,800 MB/s
Size & build
Product dimensions4.8 in × 1.0 in × 1.8 in
Product weight0.032 kg

Questions about this item

How much clearance does the 4.8 in length need beside a USB 3.0 port?

The adapter measures 4.8 in long, 1.0 in wide and 1.8 in deep, so allow at least that space next to the port to avoid blocking adjacent sockets.

What is the driver installation step that Windows 10 and 11 handle automatically?

Windows 10 and 11 detect the adapter and install the driver without user action; no manual setup is required on those systems.

When would the high-gain antenna need to be repositioned or replaced?

Reposition the antenna if signal drops or speeds fall below the rated 1201 Mbps on 5 GHz or 574 Mbps on 2.4 GHz; the antenna is fixed, so replacement means a new adapter.

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