diff --git a/Module.mk b/Module.mk
index 714c1f2..df3f25d 100644
--- a/Module.mk
+++ b/Module.mk
@@ -381,6 +381,7 @@ $(zipdir)/iidx-hwio-x86.zip: \
 		build/bin/indep-32/iidxio-bio2.dll \
 		build/bin/indep-32/iidxio-ezusb.dll \
 		build/bin/indep-32/iidxio-ezusb2.dll \
+		dist/iidx/iidxio-bio2.conf \
 		| $(zipdir)/
 	$(V)echo ... $@
 	$(V)zip -j $@ $^
@@ -390,6 +391,7 @@ $(zipdir)/iidx-hwio-x64.zip: \
 		build/bin/indep-64/iidxio-bio2.dll \
 		build/bin/indep-64/iidxio-ezusb.dll \
 		build/bin/indep-64/iidxio-ezusb2.dll \
+		dist/iidx/iidxio-bio2.conf \
 		| $(zipdir)/
 	$(V)echo ... $@
 	$(V)zip -j $@ $^
diff --git a/dist/iidx/iidxio-bio2.conf b/dist/iidx/iidxio-bio2.conf
new file mode 100644
index 0000000..f87e2d7
--- /dev/null
+++ b/dist/iidx/iidxio-bio2.conf
@@ -0,0 +1,8 @@
+# Autodetect BIO2 port (default: on)
+bio2.autodetect=true
+
+# BIO2 serial port
+bio2.port=COM4
+
+# BIO2 bus baudrate (real devices expect 115200)
+bio2.baud=115200
\ No newline at end of file