Realtek RTL8192DU 802.11n USB Wi-Fi adapters
Dual-band 2.4/5 GHz 802.11n (Wi-Fi 4) USB dongles built around Realtek's RTL8192DU chipset, sold around 2011-2012 by vendors like Belkin and Planex. They were typical consumer USB Wi-Fi sticks of that era and a handful are still in service on modern Linux machines.
recommendation
Worth keeping but flagging as legacy hardware. The mainline driver was actually added quite recently, in May 2024, with follow-up USB-ID and bug fixes through late 2024, so it is fresh code rather than abandoned cruft. The chips themselves date to 2011-2012 and aren't sold new in 2025, but probe data on linux-hardware.org shows the dongles are still occasionally plugged into current kernels, justifying continued support alongside a note that the supported hardware is a decade old.
repository signals
sources
- lwn.net
Lore-mirrored patch series shows rtl8192du was upstreamed in May 2024, so this is a recently added mainline driver rather than abandoned legacy code.
- spinics.net
Review thread for enabling rtl8192du discusses testing and limitations, indicating active upstream bring-up rather than removal planning.
- spinics.net
Linux Wireless archive index includes the October 2024 rtl8192du USB-ID fix thread, showing post-merge maintenance traffic.
- cateee.net
LKDDb lists CONFIG_RTL8192DU in mainline kernels 6.11 onward and identifies supported USB IDs, confirming current upstream presence.
- wikidevi.wi-cat.ru
Documented RTL8192DU devices are USB 2.0 802.11n adapters from the 2011-2012 era, supporting the view that the hardware family is old.
- linux-hardware.org
linux-hardware still has recent probe data for an RTL8192DU-based Belkin adapter on modern kernels, suggesting residual but limited deployment.
codex reasoning notes (technical)
Not a phase-1 early exit: local source inspection via exec_command showed a real module_usb_driver-based USB WLAN driver with many supported IDs. Upstream activity was checked first: exec_command git log showed 2024 introduction and 2024/2025 follow-up fixes; web search then surfaced lore mirrors on LWN and spinics, with no removal/deprecation thread found. Deployment evidence came from web-found LKDDb, WikiDevi, and linux-hardware pages: the chipset maps to circa-2011/2012 Wi-Fi 4 USB dongles, still seen occasionally on current systems but not plausibly a 2025 new-sales platform. That supports keeping the driver, but annotating it as legacy/low-deployment hardware.