diff --git a/log.capnp b/log.capnp
index abcf2e6..46aa4fe 100644
--- a/log.capnp
+++ b/log.capnp
@@ -307,6 +307,7 @@ struct HealthData {
   gmlanSendErrs @9 :UInt32;
   hwType @10 :HwType;
   fanSpeedRpm @11 :UInt16;
+  usbPower @12 :Bool;
 
   enum HwType {
     unknown @0;