diff --git a/mitll4satellite.json b/mitll4satellite.json
index 0b83845..b491628 100644
--- a/mitll4satellite.json
+++ b/mitll4satellite.json
@@ -23,7 +23,7 @@
         {
             "type": "dio",
             "ports": [4],
-            "bank_direction_low": "output",
+            "bank_direction_low": "input",
             "bank_direction_high": "input"
         }
     ]