diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index c9ebefd8f35fdbe5491627f4df89b80c87aeabad..a585b477415dde58b38c9e2defe0d26c24552757 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -52,6 +52,8 @@ static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
 	{ USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID),
 		.driver_info = PL2303_QUIRK_ENDPOINT_HACK },
+	{ USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_UC485),
+		.driver_info = PL2303_QUIRK_ENDPOINT_HACK },
 	{ USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID2) },
 	{ USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) },
 	{ USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) },
diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h
index 09d9be88209e1ce6b1f53dc052a53c5e4c491336..3b5a15d1dc0dd50a0ebf9d925e33ef4cf8db0090 100644
--- a/drivers/usb/serial/pl2303.h
+++ b/drivers/usb/serial/pl2303.h
@@ -27,6 +27,7 @@
 #define ATEN_VENDOR_ID		0x0557
 #define ATEN_VENDOR_ID2		0x0547
 #define ATEN_PRODUCT_ID		0x2008
+#define ATEN_PRODUCT_UC485	0x2021
 #define ATEN_PRODUCT_ID2	0x2118
 
 #define IODATA_VENDOR_ID	0x04bb