1What: /sys/class/ieee80211/phyX/rtw89_usb/serial_number 2Date: May 2026 3Contact: Johnson Tsai <wenjie.tsai@realtek.com>, linux-wireless@vger.kernel.org 4Description: (Read) Serial number burned into EFUSE of the RTL8852CU-based 5 USB Wi-Fi adapter. Only present on devices that set the 6 RTW89_QUIRK_HW_INFO_SYSFS quirk (currently VID 0x28de / 7 PID 0x2432). 8 9 Format: %10phN (5 raw bytes printed as 10 lowercase hex 10 digits, no separators). 11 12 Example: 3642000123 13 14What: /sys/class/ieee80211/phyX/rtw89_usb/uuid 15Date: May 2026 16Contact: Johnson Tsai <wenjie.tsai@realtek.com>, linux-wireless@vger.kernel.org 17Description: (Read) UUID burned into EFUSE of the RTL8852CU-based USB Wi-Fi 18 adapter. Only present on devices that set the 19 RTW89_QUIRK_HW_INFO_SYSFS quirk (currently VID 0x28de / 20 PID 0x2432). 21 22 Format: %pUb (RFC 4122 UUID in lowercase with hyphens). 23 24 Example: aaec2b7c-0a55-4727-8de0-b30febccbbaa 25