diff --git a/src/avrdude.conf.in b/src/avrdude.conf.in
index 19aafaf3..5ee22362 100644
--- a/src/avrdude.conf.in
+++ b/src/avrdude.conf.in
@@ -2986,6 +2986,17 @@ serialadapter # ch340
     usbpid                 = 0x7523;
 ;
 
+#------------------------------------------------------------
+# ch343
+#------------------------------------------------------------
+
+serialadapter # ch343
+    id                     = "ch343";
+    desc                   = "WCH CH343 USB to serial adapter";
+    usbvid                 = 0x1a86;
+    usbpid                 = 0x55d3;
+;
+
 #------------------------------------------------------------
 # ch9102
 #------------------------------------------------------------