diff --git a/chuniio/src/configuration.rs b/chuniio/src/configuration.rs
index 6e00b5a..8e440f8 100644
--- a/chuniio/src/configuration.rs
+++ b/chuniio/src/configuration.rs
@@ -4,3 +4,8 @@ pub struct Configuration {
     pub service_key: u32,
     pub coin_key: u32,
 }
+
+#[derive(Debug, Clone, Copy)]
+pub struct DeviceConfiguration {
+    pub rpunithm: u32
+}