diff --git a/keyboards/sirius/uni660/rev2/config.h b/keyboards/sirius/uni660/rev2/ansi/config.h
similarity index 100%
rename from keyboards/sirius/uni660/rev2/config.h
rename to keyboards/sirius/uni660/rev2/ansi/config.h
diff --git a/keyboards/sirius/uni660/rev2/iso/config.h b/keyboards/sirius/uni660/rev2/iso/config.h
new file mode 100644
index 000000000..e31f8fb8e
--- /dev/null
+++ b/keyboards/sirius/uni660/rev2/iso/config.h
@@ -0,0 +1,78 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+
+#define VENDOR_ID       0x5352			// "SR"
+#define PRODUCT_ID      0x0203			// Second Product Third Version
+#define DEVICE_VER      0x2004			// 2020.12
+#define MANUFACTURER    SiRius
+#define PRODUCT         SiRius Uni660 V2
+#define DESCRIPTION     SiRius Uni660 V2
+
+/* key matrix size */
+#define MATRIX_ROWS 5
+#define MATRIX_COLS 16
+
+/* define if matrix has ghost */
+//#define MATRIX_HAS_GHOST
+
+/* number of backlight levels */
+//#define BACKLIGHT_LEVELS 3
+
+#define ONESHOT_TIMEOUT 500
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+//#define NO_DEBUG
+
+/* disable print */
+//#define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION
+
+//UART settings for communication with the RF microcontroller
+#define SERIAL_UART_BAUD 1000000
+#define SERIAL_UART_DATA UDR1
+#define SERIAL_UART_UBRR (F_CPU / (16UL * SERIAL_UART_BAUD) - 1)
+#define SERIAL_UART_TXD_READY (UCSR1A & _BV(UDRE1))
+#define SERIAL_UART_RXD_PRESENT (UCSR1A & _BV(RXC1))
+#define SERIAL_UART_INIT() do { \
+    	/* baud rate */ \
+    	UBRR1L = SERIAL_UART_UBRR; \
+    	/* baud rate */ \
+    	UBRR1H = SERIAL_UART_UBRR >> 8; \
+    	/* enable TX and RX */ \
+    	UCSR1B = _BV(TXEN1) | _BV(RXEN1); \
+    	/* 8-bit data */ \
+    	UCSR1C = _BV(UCSZ11) | _BV(UCSZ10); \
+  	} while(0)
+
+#define DYNAMIC_KEYMAP_LAYER_COUNT 4