--- linux-3.10/drivers/usb/serial/ftdi_sio.c
+++ linux-3.10/drivers/usb/serial/ftdi_sio.c
@@ -1002,6 +1002,11 @@
 	{ USB_DEVICE(FTDI_VID, FTDI_EKEY_CONV_USB_PID) },
 	/* Infineon Devices */
 	{ USB_DEVICE_INTERFACE_NUMBER(INFINEON_VID, INFINEON_TRIBOARD_PID, 1) },
+	/* QuadMouse cardreader devices  */
+	{ USB_DEVICE(QUAD_VID, QUADMOUSE_PID1) },
+	{ USB_DEVICE(QUAD_VID, QUADMOUSE_PID2) },
+	{ USB_DEVICE(QUAD_VID, QUADMOUSE_PID3) },
+	{ USB_DEVICE(QUAD_VID, QUADMOUSE_PID4) },
 	{ },					/* Optional parameter entry */
 	{ }					/* Terminating entry */
 };
--- linux-3.10/drivers/usb/serial/ftdi_sio.h
+++ linux-3.10/drivers/usb/serial/ftdi_sio.h
@@ -220,6 +220,11 @@
  */
 
 
+/* Interface indicies for FT2232, FT2232H and FT4232H devices*/
+#define INTERFACE_A		1
+#define INTERFACE_B		2
+#define INTERFACE_C		3
+#define INTERFACE_D		4
 
 /* FTDI_SIO_MODEM_CTRL */
 #define FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE 0x40
--- linux-3.10/drivers/usb/serial/ftdi_sio_ids.h
+++ linux-3.10/drivers/usb/serial/ftdi_sio_ids.h
@@ -533,6 +533,12 @@
 #define FTDI_8U232AM_PID3	0x6003	/* FTDI USB2Serial */
 #define FTDI_8U232AM_PID4	0x6004	/* FTDI USB2Serial */
 
+#define QUAD_VID                      0x0403
+#define QUADMOUSE_PID1   0x0001  /* Quadmouse USB */
+#define QUADMOUSE_PID2   0x0002  /* Quadmouse USB */
+#define QUADMOUSE_PID3   0x0003  /* Quadmouse USB */
+#define QUADMOUSE_PID4   0x0004  /* Quadmouse USB */
+
 /*
  * Video Networks Limited / Homechoice in the UK use an ftdi-based device
  * for their 1Mb broadband internet service.  The following PID is exhibited