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What: /sys/class/ieee80211/phyX/rtw89_usb/serial_number
Date: May 2026
Contact: Johnson Tsai <wenjie.tsai@realtek.com>, linux-wireless@vger.kernel.org
Description: (Read) Serial number burned into EFUSE of the RTL8852CU-based
USB Wi-Fi adapter. Only present on devices that set the
RTW89_QUIRK_HW_INFO_SYSFS quirk (currently VID 0x28de /
PID 0x2432).
Format: %10phN (5 raw bytes printed as 10 lowercase hex
digits, no separators).
Example: 3642000123
What: /sys/class/ieee80211/phyX/rtw89_usb/uuid
Date: May 2026
Contact: Johnson Tsai <wenjie.tsai@realtek.com>, linux-wireless@vger.kernel.org
Description: (Read) UUID burned into EFUSE of the RTL8852CU-based USB Wi-Fi
adapter. Only present on devices that set the
RTW89_QUIRK_HW_INFO_SYSFS quirk (currently VID 0x28de /
PID 0x2432).
Format: %pUb (RFC 4122 UUID in lowercase with hyphens).
Example: aaec2b7c-0a55-4727-8de0-b30febccbbaa
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