diff --git a/addnew_printer.sh b/addnew_printer.sh
index 60563e3..ef79afa 100755
--- a/addnew_printer.sh
+++ b/addnew_printer.sh
@@ -127,7 +127,7 @@ then
    counter=0
    while [[ -z "$UDEV" ]] && [[ $counter -lt 30 ]]; do 
       UDEV=$(timeout 1s journalctl -kf | sed -n -e 's/^.*SerialNumber: //p')
-      TEMPUSB=$(timeout 1s journalctl -kf | sed -n -e 's/^.*\(cdc_acm\|ftdi_sio\) \([0-9].*[0-9]\): \(tty.*\|FTD.*\).*/\2/p')   
+      TEMPUSB=$(timeout 1s journalctl -kf | sed -n -e 's/^.*\(cdc_acm\|ftdi_sio\|ch341\) \([0-9].*[0-9]\): \(tty.*\|FTD.*\|ch341.*\).*/\2/p')   
       counter=$(( $counter + 1 ))
    done
 fi
diff --git a/usbtesting.sh b/usbtesting.sh
new file mode 100755
index 0000000..ceae5ce
--- /dev/null
+++ b/usbtesting.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+journalctl --rotate > /dev/null 2>&1
+journalctl --vacuum-time=1seconds > /dev/null 2>&1
+echo "Plug your printer in via USB now (detection time-out in 1 min)"
+counter=0
+while [[ -z "$UDEV" ]] && [[ $counter -lt 30 ]]; do
+   UDEV=$(timeout 1s journalctl -kf | sed -n -e 's/^.*SerialNumber: //p')
+   TEMPUSB=$(timeout 1s journalctl -kf | sed -n -e 's/^.*\(cdc_acm\|ftdi_sio\|ch341\) \([0-9].*[0-9]\): \(tty.*\|FTD.*\|ch341-uart.*\).*/\2/p')
+   counter=$(( $counter + 1 ))
+   if [ -n "$TEMPUSB" ]; then
+      echo $TEMPUSB
+   fi
+done
+