diff --git a/README.md b/README.md
index b49e829..8e75d47 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ An integrated Android Auto retrofit system for the retracting Volvo Road and Tra
 
 ## 🛠️ System Architecture
 
-The retrofit consists of three key layers working in unison: **vehicle bus integration (LIN)**, **screen power/command control (RTI Serial)**, and the **core computer (Raspberry Pi 4)**.
+The retrofit consists of three key layers working in unison: **vehicle bus integration (LIN)**, **screen power/command control (RTI Serial)**, and the **core computer (Banana Pi M2 Nano)**.
 
 ```mermaid
 graph TD
@@ -25,10 +25,10 @@ graph TD
     CEM[Central Electronic Module - LIN] -- "LIN Keep-Alive Ping" --> ATtiny
     
     %% ATtiny Processing
-    ATtiny -- "RC-6 MCE IR Protocol (Bit-banged)" --> Pi_IR[Raspberry Pi GPIO 24 / IR Input]
+    ATtiny -- "RC-6 MCE IR Protocol (Bit-banged)" --> Pi_IR[Banana Pi GPIO / IR Input]
     
     %% Pi Processing
-    subgraph Raspberry Pi 4 [Raspberry Pi 4 - LineageOS]
+    subgraph Banana Pi M2 Nano [Banana Pi M2 Nano - LineageOS]
         Pi_IR --> KM[KeyMapper / Input Dispatcher]
         KM -- "Volume Up Trigger > 5s LIN Idle" --> SD[OS Shutdown Command]
         Hotspot[Init Services] -- "Auto-start on Boot" --> AP[Wi-Fi AP: VolvoC70_AndroidAuto]