diff --git a/share/man/man4/rtwn_usb.4 b/share/man/man4/rtwn_usb.4
index 4d902ac76c86..3019827fd5e4 100644
--- a/share/man/man4/rtwn_usb.4
+++ b/share/man/man4/rtwn_usb.4
@@ -29,7 +29,7 @@
 .\"
 .\" $FreeBSD$
 .\"/
-.Dd May 12, 2020
+.Dd June 27, 2020
 .Dt RTWN_USB 4
 .Os
 .Sh NAME
@@ -67,6 +67,7 @@ based USB wireless network adapters, including:
 .It "ASUS USB-N10 NANO" Ta RTL8188CUS Ta USB 2.0
 .It "Asus USB-N13, rev. B1" Ta RTL8192CU Ta USB 2.0
 .It "Belkin F7D1102 Surf Wireless Micro" Ta RTL8188CUS Ta USB 2.0
+.It "Buffalo WI-U2-433DHP" Ta RTL8821AU Ta USB 2.0
 .It "Buffalo WI-U2-433DM" Ta RTL8821AU Ta USB 2.0
 .It "Buffalo WI-U3-866D" Ta RTL8812AU Ta USB 3.0
 .It "D-Link DWA-123 rev D1" Ta RTL8188EU Ta USB 2.0
diff --git a/sys/dev/rtwn/usb/rtwn_usb_attach.h b/sys/dev/rtwn/usb/rtwn_usb_attach.h
index 576f403e6fff..ee9cf6b30019 100644
--- a/sys/dev/rtwn/usb/rtwn_usb_attach.h
+++ b/sys/dev/rtwn/usb/rtwn_usb_attach.h
@@ -159,6 +159,7 @@ static const STRUCT_USB_HOST_ID rtwn_devs[] = {
 	RTWN_RTL8821AU_DEV(ELECOM,		WDB433SU2M2),
 	RTWN_RTL8821AU_DEV(HAWKING,		HD65U),
 	RTWN_RTL8821AU_DEV(MELCO,		WIU2433DM),
+	RTWN_RTL8821AU_DEV(MELCO,		WIU2433DHP),
 	RTWN_RTL8821AU_DEV(NETGEAR,		A6100),
 	RTWN_RTL8821AU_DEV(REALTEK,		RTL8821AU_1),
 	RTWN_RTL8821AU_DEV(REALTEK,		RTL8821AU_2),
diff --git a/sys/dev/usb/usbdevs b/sys/dev/usb/usbdevs
index 5c09d2cafcb8..c9e366bfe242 100644
--- a/sys/dev/usb/usbdevs
+++ b/sys/dev/usb/usbdevs
@@ -3190,6 +3190,7 @@ product MELCO WLIUCG300HPV1	0x01a8	WLI-UC-G300HP-V1
 product MELCO WLIUCGNM2		0x01ee	WLI-UC-GNM2
 product MELCO WIU2433DM		0x0242	WI-U2-433DM
 product MELCO WIU3866D		0x025d	WI-U3-866D
+product MELCO WIU2433DHP	0x029b	WI-U2-433DHP
 
 /* Merlin products */
 product MERLIN V620             0x1110  Merlin V620