diff --git a/rules.d/65-integration.rules b/rules.d/65-integration.rules
index 5d78c94c387..d9e8af71b1a 100644
--- a/rules.d/65-integration.rules
+++ b/rules.d/65-integration.rules
@@ -12,13 +12,16 @@ ENV{ID_BUS}=="acpi|platform|i8042|i2c|rmi|spi|pci", ENV{ID_INTEGRATION}="interna
 # Bluetooth devices: External by default.
 ENV{ID_BUS}=="bluetooth", ENV{ID_INTEGRATION}="external", GOTO="libinput_integration_compat"
 
-# USB devices: Internal if it's connected to a fixed port, external to a removable and if it's unknown we use the main parent device attribute.
-ENV{ID_BUS}!="usb", GOTO="usb_integration_end"
-DRIVERS=="usb", ATTRS{maxchild}=="0", ATTRS{removable}=="fixed", ENV{ID_INTEGRATION}="internal", GOTO="libinput_integration_compat"
-DRIVERS=="usb", ATTRS{maxchild}=="0", ATTRS{removable}=="removable", ENV{ID_INTEGRATION}="external", GOTO="libinput_integration_compat"
-DRIVERS=="usb", ATTRS{devpath}!="0", ATTRS{removable}=="fixed", ENV{ID_INTEGRATION}="internal", GOTO="libinput_integration_compat"
-DRIVERS=="usb", ATTRS{devpath}!="0", ATTRS{removable}=="removable|unknown", ENV{ID_INTEGRATION}="external", GOTO="libinput_integration_compat"
-LABEL="usb_integration_end"
+# USB devices
+ENV{ID_BUS}!="usb", GOTO="libinput_integration_compat"
+# Do not set integration for the USB root device.
+SUBSYSTEM=="usb", ATTR{devpath}=="0", GOTO="libinput_integration_compat"
+# Assume the device is external if any parent USB device is removable.
+DRIVERS=="usb", ATTRS{removable}=="removable", ENV{ID_INTEGRATION}="external", GOTO="libinput_integration_compat"
+# If no parent device is removable, check for fixed parent devices to assume it is internal.
+DRIVERS=="usb", ATTRS{removable}=="fixed", ENV{ID_INTEGRATION}="internal", GOTO="libinput_integration_compat"
+# Fallback: if all devices in the USB chain are unknown, assume it is external.
+ENV{ID_INTEGRATION}="external", GOTO="libinput_integration_compat"
 
 # libinput compatibility, must be loaded before 70-touchpad.rules to allow hwdb quirks to override.
 LABEL="libinput_integration_compat"