Alfa Network

ALFA AWUS1900 802.11ac 1900 Mbps Dual band 2.4/5 GHz Wi-Fi USB Adapter AC1900


Pickup available at 2251 NW 41st Street

Usually ready in 1 hour

ALFA AWUS1900 is a new quad antenna 802.11ac Wi-Fi USB receiver boasting router connection speeds of up to 1900 Mbps (1300 Mbps for 5 GHz + 600 Mbps for 2.4 GHz). It is compatible with Microsoft Windows 7, 8/8.1, and Windows 10. This connects to your computer's USB port with enclosed USB 3.0 cable and boosts the Wi-Fi performance of that specific PC. This is not a router or repeater.

Its four transmit/four receive (4T4R) dual-band antenna technology allows utilization of both 2.4 and 5 GHz radio bands on 802.11ac routers for a combined max connect rate of 1900 Mbps.

The antennas can be detached and extended or upgraded (extension requires optional coaxial cable extension not included in retail box).

What comes in the box:
1x ALFA AWUS1900 USB adapter
4x dual band 5 dBi gain RP-SMA antenna
1x USB 3.0 USB cable
1x clip (can be used to clip to some laptop bezel)
1x installation DVD-ROM (driver available online if PC has no DVD drive)

Chipset: Realtek RTL8814U
See full factory spec sheet here for additional details like power and sensitivity.

Speed testing:
Broadband companies in the United States offer speeds varying between 6 Mbps and 100+ Mbps. In those cases, if you are the only user on your network you won’t see any difference in download speed whether you use this 1900 Mbps product or a slower one with a max of 300 Mbps.

You will see a big difference if the network has a number of users (provided the router to which you are connecting is 1900 Mbps capable). If you use this adapter with an older 150 or 350 Mbps 802.11n router, this adapter can only connect as fast as the router allows.

You will also see a big difference in local file transfers. We completed a test here where we transferred a file of 1.69 Gbps from our router’s storage device (Tenda AC1900 router). We then attempted to transfer this file to the same computer on the network, two different ways. First via the laptop’s built-in Wi-Fi card, a standard 802.11n card capable of 300 Mbps max transfer. The file took 350 seconds to transfer to the computer.

We then deleted the file and connected the same laptop to the Tenda router with this ALFA AWUS1900 802.11ac USB adapter, and achieved an actual connection rate to the router of 1.3 Gbps (that’s gigabits per second!). The transfer time from the network storage drive was just 70 seconds. That went 5 times faster with the ALFA AWUS1900.

While AWUS1900 is backward compatible with dual and single antenna routers, you will get the best performance in your home when pairing with an 802.11ac router capable of beamforming. This is a special type of technology that can concentrate signals stronger in the directions of connected devices as opposed to just radiating a signal evenly in a 360 horizontal pattern.


IEEE 802.11a/b/g/n/ac

2.412GHz – 2.472GHz
5.15GHz – 5.825GHz

802.11b: up to 11Mbps
802.11g: up to 54Mbps
802.11n: up to 600Mbps
802.11ac: up to 1300Mbps

4x External detachable dual-band
2.4GHz+5GHz 5dBi antenna

Antenna Connector
RP-SMA female

Channel Width
20 / 40 / 80MHz

LED Indicators
Power, WLAN

OS Support
Windows 2000, XP, Vista, 7, 8,10,11
Mac OS X 10.7-10.12

Output Power ( +/- 2dBm )
802.11a: 21dBm
802.11b: 23dBm
802.11g: 20dBm
802.11n: 23dBm
802.11an: 19.5dBm
802.11ac: 20.5dBm

802.11a: -72dBm
802.11b: -84dBm
802.11g: -70dBm
802.11n: -90dBm
802.11an: -88dBm
802.11ac: -84dBm

64/128bit WEP
WPA (TKIP with IEEE 802.1x)
WPA2 (AES with IEEE 802.1x)
WPA Mixed

Operating Temperature
-10°C ~ 60°C

Storage Humidity
5% ~ 98% (Non-condensing)

62 x 85.3 x 24 mm


Specifications :

Part/Model #: AWUS1900
Country of OriginTaiwan
Manufacturer : 
Alfa Network Inc.

Product Comparison:

Additional Resources:
ALFA Express TV: Comparing ALFA 802.11ac Dual Band Wi-Fi USB adapter options
WPA3 security support now available for AWUS036AC, AWUS036ACH, AWUS1900
How to install AWUS036ACH and AWUS1900 on Kali Linux 2020.1 w/ monitor mode
The Gadgeteer on Alfa AWUS1900: Light weight but powerful

Warranty & Support:
Complimentary Telephone and Email/Live Chat Support (Click Here)

Sales tax is required in many states and will be added at checkout if applicable to your delivery state. Tax exempt forms can be sent to our support department.

TAA Compliance: 

Rokland stands behind our TAA Compliant ALFA Network Wi-Fi products

If you represent a government agency looking to purchase Wi-Fi or networking equipment or attending a bid, please contact our Rokland sales specialists.

Contact us here for a custom quote

Quantity, government, and military discounts are available. GSA (General Services Administration) compatible.

Return Policy: This item can be returned for refund within 30 days of receipt. Because range can vary greatly based on your environment, if you are not sure a particular product will meet your range needs please contact us before buying. Orders with free shipping selected will incur a restocking fee up to 15% to help us cover the original shipping cost unless the item is defective or different from the advertisement. Any expedited shipping charges paid, including return shipping, are non-refundable. Items must be returned the way they were received, in new or like-new condition, with all pieces, documentation, and retail packaging (if applicable) included. For bulk purchases, see our bulk purchase return policy here.

Shipping & Returns
FREE Standard shipping on all items shipped in the USA! 
We are in Florida and ship to: USA, Australia, Austria, Canada, France, Germany, Israel, Netherlands, and the United Kingdom. Local pickup available in Gainesville, FL

Expedited shipping orders placed before 3PM EST weekdays will ship that day. Standard shipping orders ship within 1 business day.

Sales tax: shipments shipped to states in which we are registered to collect tax will have appropriate tax added at checkout. Tax exempt forms can be sent to our support staff who can activate exemption status. 

Lost packages and insurance

International Shipping:

Shipping options are visible in cart by using the shipping estimator. Transit times posted are estimates. International packages are subject to customs holds and duty payment may be required by your government on delivery. The cost of duty  is not reimbursable. Internatonal shipping charges are not refundable in the event of a return.


See item description for product specific return policies, and return policies vary by item.

Bulk/High Value Order Returns

Due to the labor required to package and ship bulk orders, as well as cost and stock issues involved in replenishing items, bulk orders of 5 pieces or more are not returnable unless the equipment is defective or mis-advertised, or a return period is prenegotiated. For non-defective returns over $500, a restocking fee may be deducted from the refund to cover bank or card processing fees.


Items on backorder or preorder will ship as estimated on the item page. You can cancel an order any time up until shipment. Orders with expedited shipping will arrive in the advertised time after the order ships, not after the order is placed.


If you want to cancel an order, please email or call us at (352) 372-9902. If your item has not been shipped, we will cancel the order and provide a full refund.

Customer Reviews

Based on 13 reviews
Francis Borges
Amazing. Powerful.

Best card hands down. Rokland had the best selection of networking goodies and the best customer service. THANKS ROKLAND

casey mclain

I never received the wifi adapter

Ronald Dombrowsky
Awesome speeds WHEN IT WORKED

Had the original AC1900 and the drivers did NOT work on an older verison of windows 10 installed the driver as instructed and the after rebooting the computer the drivers kept shutting the AC1900 off and on no matter what i idid
i tried installing just the drivers and not the utility same problem Called Rokland and I was sent a new shipping label for return waiting for my refund

We offered to troubleshoot this with you but our request was declined, so we are waiting to receive the item back to determine if the issues you reported are related to a faulty adapter, or are computer-specific to your PC. We have not received other issue reports beyond an occasional setup issue that has been resolved through troubleshooting, we have not seen any issues with the driver.


ALFA AWUS1900 802.11ac 1900 Mbps Dual band 2.4/5 Ghz Wi-Fi USB Adapter AC1900

Steven W Miles
Not as good as advertised

The adapter does pick up from alittle further then my laptop but it seems to drop in strength and drops completely when it warms up