diff --git a/backends/osx.py b/backends/osx.py
index c2c1d62..20e58f0 100644
--- a/backends/osx.py
+++ b/backends/osx.py
@@ -43,6 +43,7 @@ class OSXBackend(backends.backend.Backend):
     port_patterns = [
         '/dev/tty.SLAB*',
         '/dev/tty.usbmodem*',
+        '/dev/tty.usbserial*',
     ]
 
     search_attrs = {