diff --git a/library.properties b/library.properties
index 879479d..e2dd0fe 100644
--- a/library.properties
+++ b/library.properties
@@ -6,5 +6,5 @@ sentence=Enables sending and receiving data using the RS-485 standard with RS-48
 paragraph=This library supports the Maxim Integrated MAX3157 and equivalent chipsets.
 category=Communication
 url=http://www.arduino.cc/en/Reference/ArduinoRS485
-architectures=samd,mbed_portenta,mbed_opta
+architectures=samd,mbed_portenta,mbed_opta,mbed_nano,renesas_uno
 includes=ArduinoRS485.h
diff --git a/src/RS485.h b/src/RS485.h
index 8d01799..da1adf1 100644
--- a/src/RS485.h
+++ b/src/RS485.h
@@ -39,6 +39,10 @@
 #elif ARDUINO_SAMD_ZERO
 #define RS485_DEFAULT_DE_PIN A4
 #define RS485_DEFAULT_RE_PIN A5
+#elif defined(ARDUINO_UNOR4_WIFI) || defined(ARDUINO_UNOR4_MINIMA)
+#define SERIAL_PORT_HARDWARE Serial1
+#define RS485_DEFAULT_DE_PIN 8
+#define RS485_DEFAULT_RE_PIN 7
 #else
 #ifndef RS485_DEFAULT_DE_PIN
 #define RS485_DEFAULT_DE_PIN A6