diff --git a/device-api/src/arch/mod.rs b/device-api/src/arch/mod.rs
index b6cf4c0..75678ad 100644
--- a/device-api/src/arch/mod.rs
+++ b/device-api/src/arch/mod.rs
@@ -38,10 +38,12 @@ impl Arch {
         sysfs: &str,
     ) -> DeviceResult<Box<dyn DeviceInner>> {
         match self {
-            Arch::WarboyB0 => WarboyInner::new(*self, idx, sysfs.into())
-                .map(|t| Box::new(t) as Box<dyn DeviceInner>),
-            Arch::Renegade => RenegadeInner::new(*self, idx, sysfs.into())
-                .map(|t| Box::new(t) as Box<dyn DeviceInner>),
+            Arch::WarboyB0 => {
+                WarboyInner::new(idx, sysfs.into()).map(|t| Box::new(t) as Box<dyn DeviceInner>)
+            }
+            Arch::Renegade => {
+                RenegadeInner::new(idx, sysfs.into()).map(|t| Box::new(t) as Box<dyn DeviceInner>)
+            }
         }
     }
 
diff --git a/device-api/src/arch/renegade.rs b/device-api/src/arch/renegade.rs
index de28749..fe0a107 100644
--- a/device-api/src/arch/renegade.rs
+++ b/device-api/src/arch/renegade.rs
@@ -14,7 +14,6 @@ use crate::DeviceError;
 
 #[derive(Clone, Debug)]
 pub struct RenegadeInner {
-    arch: Arch,
     devfile_index: u8,
     sysfs: PathBuf,
     mgmt_root: PathBuf,
@@ -22,14 +21,13 @@ pub struct RenegadeInner {
 }
 
 impl RenegadeInner {
-    pub fn new(arch: Arch, devfile_index: u8, sysfs: PathBuf) -> DeviceResult<Self> {
+    pub fn new(devfile_index: u8, sysfs: PathBuf) -> DeviceResult<Self> {
         let mgmt_root = sysfs.join(format!(
             "class/renegade_mgmt/renegade!npu{devfile_index}mgmt"
         ));
         let mgmt_cache = MgmtCache::init(&mgmt_root, StaticMgmtFile::iter())?;
 
         Ok(RenegadeInner {
-            arch,
             devfile_index,
             sysfs,
             mgmt_root,
@@ -80,7 +78,7 @@ impl DeviceMgmt for RenegadeInner {
 
     #[inline]
     fn arch(&self) -> Arch {
-        self.arch
+        Arch::Renegade
     }
 
     fn name(&self) -> String {
@@ -171,8 +169,7 @@ mod tests {
 
     #[test]
     fn test_renegade_inner_functionality() -> eyre::Result<()> {
-        let device =
-            RenegadeInner::new(Arch::Renegade, 0, PathBuf::from("../test_data/test-1/sys"))?;
+        let device = RenegadeInner::new(0, PathBuf::from("../test_data/test-1/sys"))?;
 
         assert_eq!(device.devfile_index(), 0);
         assert_eq!(device.arch(), Arch::Renegade);
diff --git a/device-api/src/arch/warboy.rs b/device-api/src/arch/warboy.rs
index 079bffe..a5c0047 100644
--- a/device-api/src/arch/warboy.rs
+++ b/device-api/src/arch/warboy.rs
@@ -13,7 +13,6 @@ use crate::{Arch, ClockFrequency, DeviceError, DeviceFile};
 
 #[derive(Clone, Debug)]
 pub struct WarboyInner {
-    arch: Arch,
     devfile_index: u8,
     sysfs: PathBuf,
     mgmt_root: PathBuf,
@@ -21,12 +20,11 @@ pub struct WarboyInner {
 }
 
 impl WarboyInner {
-    pub fn new(arch: Arch, devfile_index: u8, sysfs: PathBuf) -> DeviceResult<Self> {
+    pub fn new(devfile_index: u8, sysfs: PathBuf) -> DeviceResult<Self> {
         let mgmt_root = sysfs.join(format!("class/npu_mgmt/npu{devfile_index}_mgmt"));
         let mgmt_cache = MgmtCache::init(&mgmt_root, StaticMgmtFile::iter())?;
 
         Ok(WarboyInner {
-            arch,
             devfile_index,
             sysfs,
             mgmt_root,
@@ -75,8 +73,9 @@ impl DeviceMgmt for WarboyInner {
         self.devfile_index
     }
 
+    #[inline]
     fn arch(&self) -> Arch {
-        self.arch
+        Arch::WarboyB0
     }
 
     fn name(&self) -> String {
@@ -176,7 +175,7 @@ mod tests {
 
     #[test]
     fn test_warboy_inner_functionality() -> eyre::Result<()> {
-        let device = WarboyInner::new(Arch::WarboyB0, 0, PathBuf::from("../test_data/test-1/sys"))?;
+        let device = WarboyInner::new(0, PathBuf::from("../test_data/test-1/sys"))?;
 
         assert_eq!(device.devfile_index(), 0);
         assert_eq!(device.arch(), Arch::WarboyB0);