+
+######################### FIXED LAYOUT DEVICES #############################
+# This section lists devices for which only one keyboard layout is possible
+# or useful such as devices which "type" expecting the user's keymap to match
+# a particular one. For example, barcode readers and OTP keys.
+#
+# The layout must be an xkb compatible layout (defined with XKB_FIXED_LAYOUT),
+# with an accompanying variant (defined with XKB_FIXED_VARIANT) if necessary.
+
+# Yubico Yubico Yubikey II"
+evdev:input:b0003v1050p0010*
+# Yubico Yubikey NEO OTP+CCID
+evdev:input:b0003v1050p0111*
+# Yubico Yubikey NEO OTP+U2F+CCID
+evdev:input:b0003v1050p0116*
+# OKE Electron Company USB barcode reader
+evdev:input:b0003v05FEp1010*
+ XKB_FIXED_LAYOUT="us"
+ XKB_FIXED_VARIANT=""
+
+######################### LACK OF MODIFIER LEDS ############################
+# This section lists keyboard which do not have their own LEDs for some
+# modifiers. Only Caps-Lock (KEYBOARD_LED_CAPSLOCK) and Num-Lock
+# (KEYBOARD_LED_CAPSLOCK) are currently handled and need their values set
+# to "0" to indicate the absence of LED.
+#
+# Presence of a LED is implicit when the property is absent.
+
+# Logitech K750
+evdev:input:b0003v046Dp4002*
+ KEYBOARD_LED_NUMLOCK=0
+ KEYBOARD_LED_CAPSLOCK=0
+
+# Lenovo ThinkPad T430s
+evdev:atkbd:dmi:bvn*:bvr*:bd*:svnLENOVO:pn*:pvrThinkPadT430s
+ KEYBOARD_LED_CAPSLOCK=0
+
+# Lenovo ThinkPad T440s
+evdev:atkbd:dmi:bvn*:bvr*:bd*:svnLENOVO:pn*:pvrThinkPadT440s
+ KEYBOARD_LED_CAPSLOCK=0
+
+# Lenovo ThinkPad T450s
+evdev:atkbd:dmi:bvn*:bvr*:bd*:svnLENOVO:pn*:pvrThinkPadT450s
+ KEYBOARD_LED_CAPSLOCK=0
+
+# Lenovo ThinkPad T560s
+evdev:atkbd:dmi:bvn*:bvr*:bd*:svnLENOVO:pn*:pvrThinkPadT560s
+ KEYBOARD_LED_CAPSLOCK=0
+ KEYBOARD_LED_NUMLOCK=0
+
+# Lenovo ThinkPad X1 Carbon 3rd Gen
+evdev:atkbd:dmi:bvn*:bvr*:bd*:svnLENOVO:pn*:pvrThinkPadX1Carbon3rd
+ KEYBOARD_LED_CAPSLOCK=0