diff --git a/TODO b/TODO
index 485c2535..1ed41b79 100644
--- a/TODO
+++ b/TODO
@@ -76,6 +76,9 @@ is a good way of minimizing this problem. Some ideas:
   ** If one AT probing suceeds, don't allow timeouts in remaining ports when
      probing for AT.
 
+  ** For modems that we know will only expose one AT port, cancel AT probings
+     in the remaining ports being probed as soon as we get the first one.
+
 
 --------------------------------------------------------------------------------
  * AT+CMUX & Serial multiplexing