diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
index 69d313e..cd8be80 100644
--- a/drivers/usb/serial/visor.c
+++ b/drivers/usb/serial/visor.c
@@ -215,6 +215,8 @@
 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
+	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
+		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
 		.driver_info = (kernel_ulong_t)&palm_os_4_probe },
 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE31_ID),
@@ -273,6 +275,7 @@
 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
+	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE31_ID) },
 	{ USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
diff --git a/drivers/usb/serial/visor.h b/drivers/usb/serial/visor.h
index a2fa2c6..a62923f 100644
--- a/drivers/usb/serial/visor.h
+++ b/drivers/usb/serial/visor.h
@@ -30,6 +30,7 @@
 #define PALM_M125_ID			0x0040
 #define PALM_M130_ID			0x0050
 #define PALM_TUNGSTEN_T_ID		0x0060
+#define PALM_TREO_650			0x0061
 #define PALM_TUNGSTEN_Z_ID		0x0031
 #define PALM_ZIRE31_ID			0x0061
 #define PALM_ZIRE_ID			0x0070