--- sys/dev/usb/serial/uchcom.c.orig	2021-11-24 05:14:04.977799000 +0000
+++ sys/dev/usb/serial/uchcom.c	2021-11-24 05:17:01.950982000 +0000
@@ -207,6 +207,7 @@
 	{USB_VPI(USB_VENDOR_WCH2, USB_PRODUCT_WCH2_CH341SER, 0)},
 	{USB_VPI(USB_VENDOR_WCH2, USB_PRODUCT_WCH2_CH341SER_2, 0)},
 	{USB_VPI(USB_VENDOR_WCH2, USB_PRODUCT_WCH2_CH341SER_2, 0)},
+	{USB_VPI(USB_VENDOR_WCH2, USB_PRODUCT_WCH2_CH341KSER, 0)},
 };
 
 /* protypes */
@@ -331,6 +332,9 @@
 		break;
 	case USB_PRODUCT_WCH2_CH341SER_2:
 		device_printf(dev, "CH341 detected\n");
+		break;
+	case USB_PRODUCT_WCH2_CH341KSER:
+		device_printf(dev, "CH341K detected\n");
 		break;
 	default:
 		device_printf(dev, "New CH340/CH341 product 0x%04x detected\n",
--- sys/dev/usb/usbdevs.orig	2021-11-24 05:13:47.990084000 +0000
+++ sys/dev/usb/usbdevs	2021-11-24 05:13:50.529369000 +0000
@@ -4824,6 +4824,7 @@
 product WCH2 DUMMY		0x0000	Dummy product
 product WCH2 CH341SER_2		0x5523	CH341/CH340 USB-Serial Bridge
 product WCH2 CH341SER		0x7523	CH341/CH340 USB-Serial Bridge
+product WCH2 CH341KSER		0x7522	CH341K USB-Serial Bridge
 product WCH2 U2M		0X752d	CH345 USB2.0-MIDI
 
 /* West Mountain Radio products */