diff --git a/sys/dev/rtwn/usb/rtwn_usb_attach.h b/sys/dev/rtwn/usb/rtwn_usb_attach.h
index cd5485b36678..ca12480c8f19 100644
--- a/sys/dev/rtwn/usb/rtwn_usb_attach.h
+++ b/sys/dev/rtwn/usb/rtwn_usb_attach.h
@@ -117,6 +117,7 @@ static const STRUCT_USB_HOST_ID rtwn_devs[] = {
 	{ USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, RTWN_CHIP_RTL8188EU) }
 	RTWN_RTL8188EU_DEV(ABOCOM,		RTL8188EU),
 	RTWN_RTL8188EU_DEV(ASUS,		USBN10NANOB1),
+	RTWN_RTL8188EU_DEV(DLINK,		DWA121B1),
 	RTWN_RTL8188EU_DEV(DLINK,		DWA123D1),
 	RTWN_RTL8188EU_DEV(DLINK,		DWA125D1),
 	RTWN_RTL8188EU_DEV(EDIMAX,		EW7811UN_V2),
diff --git a/sys/dev/usb/usbdevs b/sys/dev/usb/usbdevs
index a6a240d62186..7a9c7431f53d 100644
--- a/sys/dev/usb/usbdevs
+++ b/sys/dev/usb/usbdevs
@@ -1792,6 +1792,7 @@ product DLINK DWA182C1		0x3315	DWA-182 rev C1
 product DLINK DWA180A1		0x3316	DWA-180 rev A1
 product DLINK DWA172A1		0x3318	DWA-172 rev A1
 product DLINK DWA131E1		0x3319	DWA-131 rev E1
+product DLINK DWA121B1		0x331b	DWA-121 rev B1
 product DLINK DWA182D1		0x331c	DWA-182 rev D1
 product DLINK DWA181A1		0x331e	DWA-181 rev A1
 product DLINK DWL122		0x3700	DWL-122