diff --git a/avr/devices/e02/README b/avr/devices/e02/README
index 1290883..cbd6f10 100644
--- a/avr/devices/e02/README
+++ b/avr/devices/e02/README
@@ -7,4 +7,5 @@ E02
 - Connection: S06-internal
 - Predecessor: E01
 - COM: UARTFD0, COM2W
-
+- Hardware:
+  - MCP2221 UART-USB interface chip (/dev/ttyACMx)
diff --git a/avr/devices/e06/README b/avr/devices/e06/README
index 1290883..8e4398d 100644
--- a/avr/devices/e06/README
+++ b/avr/devices/e06/README
@@ -7,4 +7,6 @@ E02
 - Connection: S06-internal
 - Predecessor: E01
 - COM: UARTFD0, COM2W
+- Hardware:
+  - FTI232 UART-USB interface chip (/dev/ttyUSBx)