RTWN_USB(4)

💖 RTWN_USB(4) 💖

okay bestie, sit down, hydrate, because we're talking about rtwn_usb — the Realtek USB device glue from the Kernel Interfaces Manual. yes, "glue". it's the thing that sticks your lil USB wifi stick to the actual driver. iconic behavior honestly. 🫶

---

✨ NAME ✨

rtwn_usb — Realtek USB device glue

like... it's the glue. it glues. that's the whole vibe. 💅

---

🌸 SYNOPSIS 🌸

so if you wanna compile this driver into the kernel (not as a module, we're going full send), you gotta drop these lines into your kernel configuration file:

device xhci
device ehci
device uhci
device ohci
device usb
device rtwn
device rtwn_usb
device wlan

that's the lineup. all of them. don't skip any or it's giving "why is my wifi not working" energy. 😭

---

🦋 DESCRIPTION 🦋

This module provides the USB bus glue needed for the devices supported by the rtwn(4) driver.

that's it. that's the description. it's the bridge between your USB port and the rtwn(4) driver, fr fr. no notes. ✨

---

🎀 HARDWARE 🎀

okay this is the part where it gets juicy. the rtwn_usb driver supports Realtek RTL8188CUS/RTL8188RU/RTL8188EU/RTL8192CU/RTL8192EU/RTL8812AU/RTL8821AU based USB wireless network adapters, and the full roster is:

• Alfa AWUS036NHR v2 — RTL8188RU — USB 2.0
• ASUS USB-AC56 — RTL8812AU — USB 3.0
• ASUS USB-N10 NANO — RTL8188CUS — USB 2.0
• Asus USB-N13, rev. B1 — RTL8192CU — USB 2.0
• Belkin F7D1102 Surf Wireless Micro — RTL8188CUS — USB 2.0
• Buffalo WI-U2-433DHP — RTL8821AU — USB 2.0
• Buffalo WI-U2-433DM — RTL8821AU — USB 2.0
• Buffalo WI-U3-866D — RTL8812AU — USB 3.0
• D-Link DWA-123 rev D1 — RTL8188EU — USB 2.0
• D-Link DWA-125 rev D1 — RTL8188EU — USB 2.0
• D-Link DWA-131 — RTL8192CU — USB 2.0
• D-Link DWA-131 rev E1 — RTL8192EU — USB 2.0
• D-Link DWA-171 rev A1 — RTL8821AU — USB 2.0
• D-Link DWA-172 rev A1 — RTL8821AU — USB 2.0
• D-Link DWA-180 rev A1 — RTL8812AU — USB 2.0
• D-Link DWA-182 rev C1 — RTL8812AU — USB 3.0
• Edimax EW-7811Un — RTL8188CUS — USB 2.0
• Edimax EW-7811UTC — RTL8821AU — USB 2.0
• Edimax EW-7822UAC — RTL8812AU — USB 3.0
• EDUP EP-AC1620 — RTL8821AU — USB 2.0
• Elecom WDC-150SU2M — RTL8188EU — USB 2.0
• EnGenius EUB1200AC — RTL8812AU — USB 3.0
• Foxconn WFUR6 — RTL8812AU — USB 2.0
• Hawking HD65U — RTL8821AU — USB 2.0
• Hercules Wireless N USB Pico — RTL8188CUS — USB 2.0
• I-O Data WN-AC867U — RTL8812AU — USB 3.0
• Linksys WUSB6300 — RTL8812AU — USB 3.0
• NEC AtermWL900U PA-WL900U — RTL8812AU — USB 3.0
• Netgear A6100 — RTL8821AU — USB 2.0
• Netgear WNA1000M — RTL8188CUS — USB 2.0
• Planex GW-900D — RTL8812AU — USB 3.0
• Realtek RTL8192CU — RTL8192CU — USB 2.0
• Realtek RTL8188CUS — RTL8188CUS — USB 2.0
• Sitecom WLA-7100 — RTL8812AU — USB 3.0
• TP-Link Archer T2U Nano — RTL8821AU — USB 2.0
• TP-Link Archer T4U — RTL8812AU — USB 3.0
• TP-Link Archer T4U v2 — RTL8812AU — USB 3.0
• TP-Link Archer T4UH v1 — RTL8812AU — USB 3.0
• TP-Link Archer T4UH v2 — RTL8812AU — USB 3.0
• TP-Link TL-WN722N v2 — RTL8188EU — USB 2.0
• TP-LINK TL-WN723N v3 — RTL8188EU — USB 2.0
• TP-LINK TL-WN725N v2 — RTL8188EU — USB 2.0
• TP-LINK TL-WN727N v5 — RTL8188EU — USB 2.0
• TP-LINK TL-WN821N v4 — RTL8192CU — USB 2.0
• TP-LINK TL-WN821N v5 — RTL8192EU — USB 2.0
• TP-LINK TL-WN822N v4 — RTL8192EU — USB 2.0
• TP-LINK TL-WN823N v1 — RTL8192CU — USB 2.0
• TP-LINK TL-WN823N v2 — RTL8192EU — USB 2.0
• TRENDnet TEW-805UB — RTL8812AU — USB 3.0
• ZyXEL NWD6605 — RTL8812AU — USB 3.0

fifty cards. fifty. the way they just kept going... obsessed with the commitment. 💅✨ if your lil dongle isn't on this list, that's a vibe check it did not pass, sorry bestie. 🥲

---

🌈 SEE ALSO 🌈

go read these next, they're all part of the same cinematic universe:

• rtwn(4)
• rtwn_pci(4)
• rtwnfw(4)
• usb(4)

iykyk. the whole family. 🫶

---

💀 BUGS 💀

okay so here's the tea, and it's lowkey a bummer:

The rtwn_usb driver does not support any of the 802.11ac capabilities offered by the adapters. Additional work is required in ieee80211(9) before those features can be supported.

so yeah, those fancy AC cards are out here with their 802.11ac energy and the driver is like "not today". it's not a bug bug, it's a missing feature bug, and it needs ieee80211(9) glow-up work first. no cap. 😭

fr fr: don't go expecting 802.11ac speeds just because your adapter says AC on the box. the support literally isn't there yet. 💀

---

that's the whole page bestie, you ate it, you understood it, you're basically a kernel dev now. 👑

Debian · June 27, 2020 — mwah, tysm for reading, stan RTWN_USB(4) 💖🎀🦋🌸✨