diff --git a/armbian/base/config/redis/factorysettings.txt b/armbian/base/config/redis/factorysettings.txt
index 342ef720..e51a560c 100644
--- a/armbian/base/config/redis/factorysettings.txt
+++ b/armbian/base/config/redis/factorysettings.txt
@@ -15,6 +15,8 @@ SET base:updating 0
 SET base:setup 0
 
 SET middleware:passwordSetup 0
+SET middleware:datadir /data/bbbmiddleware
+SET middleware:hsmserialport /dev/ttyS2
 
 SET tor:base:enabled 1
 SET tor:ssh:enabled 0
diff --git a/armbian/base/config/templates/bbbmiddleware.conf.template b/armbian/base/config/templates/bbbmiddleware.conf.template
index 53a07b35..253a5b83 100644
--- a/armbian/base/config/templates/bbbmiddleware.conf.template
+++ b/armbian/base/config/templates/bbbmiddleware.conf.template
@@ -1 +1,3 @@
 {{ #output: /etc/bbbmiddleware/bbbmiddleware.conf }}
+DATADIR={{ middleware:datadir #default: /data/bbbmiddleware }}
+HSMSERIALPORT={{ middleware:hsmserialport #default: /dev/ttyS2 }}
diff --git a/armbian/base/rootfs/etc/systemd/system/bbbmiddleware.service b/armbian/base/rootfs/etc/systemd/system/bbbmiddleware.service
index 1a05dc44..4ac54af5 100644
--- a/armbian/base/rootfs/etc/systemd/system/bbbmiddleware.service
+++ b/armbian/base/rootfs/etc/systemd/system/bbbmiddleware.service
@@ -10,7 +10,8 @@ After=multi-user.target bitcoind.service
 EnvironmentFile=/etc/bbbmiddleware/bbbmiddleware.conf
 ExecStartPre=/opt/shift/scripts/systemd-bbbmiddleware-startpre.sh
 ExecStart=/usr/local/sbin/bbbmiddleware \
-    -datadir=/data/bbbmiddleware
+    -datadir=${DATADIR} \
+    -hsmserialport=${HSMSERIALPORT}
 
 # Process management
 ####################