diff --git a/docs/user/supported_devices.rst b/docs/user/supported_devices.rst
index bd7ed532..1171a07a 100644
--- a/docs/user/supported_devices.rst
+++ b/docs/user/supported_devices.rst
@@ -355,6 +355,7 @@ ramips-mt7621
   - EdgeRouter X
   - EdgeRouter X-SFP
   - UniFi 6 Lite
+  - UniFi Switch Flex
 
 * ZBT
 
diff --git a/package/gluon-core/luasrc/lib/gluon/upgrade/020-interfaces b/package/gluon-core/luasrc/lib/gluon/upgrade/020-interfaces
index cf21e907..1ecdd7fd 100755
--- a/package/gluon-core/luasrc/lib/gluon/upgrade/020-interfaces
+++ b/package/gluon-core/luasrc/lib/gluon/upgrade/020-interfaces
@@ -67,6 +67,10 @@ elseif platform.match('ramips', 'mt7621', {
 	'netgear,wac104',
 }) then
 	lan_ifname, wan_ifname = 'lan2 lan3 lan4', 'lan1'
+elseif platform.match('ramips', 'mt7621', {
+	'ubnt,usw-flex',
+}) then
+	lan_ifname, wan_ifname = 'lan2 lan3 lan4 lan5', 'lan1'
 end
 
 if wan_ifname and lan_ifname then
diff --git a/package/gluon-core/luasrc/usr/lib/lua/gluon/platform.lua b/package/gluon-core/luasrc/usr/lib/lua/gluon/platform.lua
index 1d7de7c3..57ef5673 100644
--- a/package/gluon-core/luasrc/usr/lib/lua/gluon/platform.lua
+++ b/package/gluon-core/luasrc/usr/lib/lua/gluon/platform.lua
@@ -59,6 +59,10 @@ function M.is_outdoor_device()
 		'mikrotik,sxtsq-5-ac',
 	}) then
 		return true
+	elseif M.match('ramips', 'mt7621', {
+		'ubnt,usw-flex',
+	}) then
+		return true
 	end
 
 	return false
diff --git a/targets/ramips-mt7621 b/targets/ramips-mt7621
index 90079c9d..8459eca6 100644
--- a/targets/ramips-mt7621
+++ b/targets/ramips-mt7621
@@ -109,3 +109,8 @@ device('ubiquiti-edgerouter-x-sfp', 'ubnt_edgerouter-x-sfp', {
 		'ubnt-erx-sfp',
 	},
 })
+
+device('ubiquiti-unifi-switch-flex', 'ubnt_usw-flex', {
+	factory = false,
+	packages = {'-hostapd-mini', 'poemgr'},
+})