diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 7b1673a..1370c42 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -538,6 +538,8 @@
 	{ USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_VCP_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_TERATRONIK_D2XX_PID) },
 	{ USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) },
+	{ USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) },
+	{ USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) },
diff --git a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h
index d9e4971..c70e1de 100644
--- a/drivers/usb/serial/ftdi_sio.h
+++ b/drivers/usb/serial/ftdi_sio.h
@@ -430,6 +430,9 @@
  */
 #define EVOLUTION_VID		0xDEEE	/* Vendor ID */
 #define EVOLUTION_ER1_PID	0x0300	/* ER1 Control Module */
+#define EVO_8U232AM_PID	0x02FF	/* Evolution robotics RCM2 (FT232AM)*/
+#define EVO_HYBRID_PID		0x0302	/* Evolution robotics RCM4 PID (FT232BM)*/
+#define EVO_RCM4_PID		0x0303	/* Evolution robotics RCM4 PID */
 
 /* Pyramid Computer GmbH */
 #define FTDI_PYRAMID_PID	0xE6C8	/* Pyramid Appliance Display */