diff --git a/resource/driver/79-chameleon-usb-device-blacklist-dialout.rules b/resource/driver/79-chameleon-usb-device-blacklist-dialout.rules
new file mode 100644
index 0000000..67e3697
--- /dev/null
+++ b/resource/driver/79-chameleon-usb-device-blacklist-dialout.rules
@@ -0,0 +1,18 @@
+# Chameleon Ultra linux modem-manager de-confliction file
+#
+# copy this file to /etc/udev/rules.d (or add the entry to the end of an existing file)
+# and restart udev hotplug:
+#
+#  'sudo udevadm control --reload-rules'
+#
+
+# proxmark3
+ACTION!="add|change", GOTO="chameleon_usb_device_blacklist_end"
+SUBSYSTEM!="tty", GOTO="chameleon_ignore"
+
+ATTRS{idVendor}=="6868" ATTRS{idProduct}=="8686", ENV{ID_MM_DEVICE_IGNORE}="1" SYMLINK+="ultra-%n" MODE="660" GROUP="dialout"
+
+LABEL="chameleon_ignore"
+ATTRS{idVendor}=="2d2d" ATTRS{idProduct}=="504d", ENV{ID_MM_DEVICE_IGNORE}="1"
+
+LABEL="chameleon_usb_device_blacklist_end"
\ No newline at end of file