diff --git a/README.md b/README.md
index 0d42e207..28aa5e55 100644
--- a/README.md
+++ b/README.md
@@ -63,6 +63,10 @@ A remote console session will close when an EOF character is entered (i.e. ^D or
     XQ devices (DEQNA, DELQA and DELQA-T) are bootable on Qbus PDP11 simulators
     XQ and XU devices (DEQNA, DELQA, DELQA-T, DEUNA and DELQA) devices can now 
         directly communicate to a remote device via UDP (i.e. a built-in HECnet bridge).
+    XQ and XU devices (DEQNA, DELQA, DELQA-T, DEUNA and DELQA) devices can now 
+        optionally throttle outgoing packets which is useful when communicating with
+        legacy systems on a local LAN which can easily get over run when packets
+        arrive too fast.
     MicroVAX 3900 has QVSS (VCB01) board available.
     MicroVAX 3900 and MicroVAX II have SET CPU AUTOBOOT option
     MicroVAX 3900 has a SET CPU MODEL=(MicroVAX|VAXServer|VAXStation) command to change between system types