RT5572 dual-band USB stick — what the chipset is good for, Linux expectations, and ALFA LKR pricing.
What it is
The Ralink RT5572 dual-band USB Wi-Fi adapter is a USB Wi-Fi adapter we stock at ALFA Network LK for connectivity upgrades and for security labs that need a dedicated radio (instead of a flaky internal laptop card).
Price: LKR 6,800 (VAT inclusive).
What it is actually used for
In authorised work and teaching I use adapters like this to:
- Put a known chipset into monitor mode for lab captures on SSIDs you own
- Give Kali/Parrot a radio that behaves more predictably than many built-in Intel/Broadcom cards in VMs
- Separate “office Wi-Fi” from “assessment radio” on the same laptop
- Practice aircrack-ng suite workflows in a classroom setup or isolated lab AP
It is not a licence to attack the café AP downstairs.
Key specs (verify-able)
| Item | Detail |
|---|---|
| Chipset | Ralink/MediaTek RT5572 |
| Bands | 2.4 GHz and 5 GHz |
| Standard | 802.11a/b/g/n, USB 2.0, often 600 Mbps-class MIMO marketing |
| Interface | USB 2.0 Type-A |
| Antenna | Internal antenna on many stick designs (check the unit) |
Monitor mode / Kali notes
Older dual-band chipset with mixed monitor-mode reputation depending on driver (rt2800usb family). Identify the device, test early, and do not assume ACHM-class behaviour.
Driver behaviour changes across kernel versions. Before a paid engagement, reproduce monitor mode and injection on the same OS image you will use on-site.
Who it suits / who should pick something else
Budget dual-band connectivity / experimentation. Prefer MT7612U or ALFA ACM for more predictable modern lab use.
Practical setup notes
Check
lsusbanddmesgon first plugBe wary of compact internal antennas near metal tables
Keep expectations modest on range
Prefer a USB extension so the antennas sit away from the laptop chassis
Disable NetworkManager on the assessment interface before
airmon-ngDocument MAC addresses and physical labels when several adapters share a kit bag
Sri Lankan lab context
Most of the teams I talk to here do not have a spare RF cage or a full red-team warehouse. A single USB radio, a written lab SSID, and a laptop image everyone agrees on already prevent a lot of confusion. Keep the assessment radio off corporate EAP networks unless the SOW says otherwise. When students share adapters, label the MAC and the chipset on masking tape — generics look identical in a pile.
If you are buying for a company kit bag, write a one-page loan sheet: who signed it out, which engagement, and when it came back. That sounds dull. It stops tools walking into uncontrolled demos.
Legal and ethical use
Wireless adapters with monitor mode are routine in authorised Wi-Fi assessments and classroom labs. They are also easy to misuse.
In Sri Lanka, unauthorised access to computer systems can engage the Computer Crimes Act No. 24 of 2007. This article is product guidance, not legal advice. Only capture or inject against networks you own or networks named in a written authorisation that covers those methods.
FAQ
Will this work in a VirtualBox/VMware Kali guest?
Often yes if USB passthrough is stable and you use a short cable. Some chipsets are happier on bare metal. If airmon-ng fails, test on a live USB Kali before blaming the adapter.
Does monitor mode equal packet injection?
No. Many chipsets do both in community testing, but you should verify on your kernel with aireplay-ng injection tests inside a lab SSID you own.
Is RT5572 enough for 5 GHz / Wi-Fi 6 work?
Check the bands section above. A 2.4 GHz-only card will not see 5 GHz clients. Wi-Fi 6E cards add 6 GHz for connectivity; monitor-mode maturity still varies by driver — verify on your kernel before a client engagement.
How do I order in Sri Lanka?
Use the CTA below. We sell these for training and authorised testing, with ID checks and an authorised-use declaration before dispatch.
Ordering in Sri Lanka
Price: LKR 6,800 (VAT inclusive).
Order on alfanetworklk.com or message Dishan on WhatsApp at +94 75 255 0704. Payment: COD, KokoPay, or bank deposit. ID verification and a signed authorised-use declaration are required before dispatch.
Comments (0)
No public comments yet.