diff --git a/src/main/iidxio-ezusb/iidxio.c b/src/main/iidxio-ezusb/iidxio.c
index 681594b..5017bed 100644
--- a/src/main/iidxio-ezusb/iidxio.c
+++ b/src/main/iidxio-ezusb/iidxio.c
@@ -90,6 +90,15 @@ bool iidx_io_init(
 
 void iidx_io_fini(void)
 {
+    // Pushing some final state before closing the IO to the actual outputs, e.g. lights on/off
+    // can be a bit finicky. Do a few polls to "enforce"/flush this final state 
+    for (uint8_t i = 0; i < 5; i++) {
+        iidx_io_ep1_send();
+        iidx_io_ep2_recv();
+
+        Sleep(10);
+    }    
+
     ezusb_close(iidx_io_ezusb_handle);
     iidx_io_ezusb_handle = INVALID_HANDLE_VALUE;
 }