diff --git a/kvmd/apps/kvmd/api/switch.py b/kvmd/apps/kvmd/api/switch.py
index d89f1b84..105e26f7 100644
--- a/kvmd/apps/kvmd/api/switch.py
+++ b/kvmd/apps/kvmd/api/switch.py
@@ -52,6 +52,16 @@ class SwitchApi:
     async def __state_handler(self, _: Request) -> Response:
         return make_json_response(await self.__switch.get_state())
 
+    @exposed_http("POST", "/switch/set_active_prev")
+    async def __set_active_prev_handler(self, _: Request) -> Response:
+        await self.__switch.set_active_prev()
+        return make_json_response()
+
+    @exposed_http("POST", "/switch/set_active_next")
+    async def __set_active_next_handler(self, _: Request) -> Response:
+        await self.__switch.set_active_next()
+        return make_json_response()
+
     @exposed_http("POST", "/switch/set_active")
     async def __set_active_port_handler(self, req: Request) -> Response:
         port = valid_int_f0(req.query.get("port"))
diff --git a/kvmd/apps/kvmd/switch/__init__.py b/kvmd/apps/kvmd/switch/__init__.py
index 6f2337a4..33f96e4c 100644
--- a/kvmd/apps/kvmd/switch/__init__.py
+++ b/kvmd/apps/kvmd/switch/__init__.py
@@ -141,6 +141,12 @@ class Switch:  # pylint: disable=too-many-public-methods
 
     # =====
 
+    async def set_active_prev(self) -> None:
+        self.__chain.set_active_prev()
+
+    async def set_active_next(self) -> None:
+        self.__chain.set_active_next()
+
     async def set_active_port(self, port: int) -> None:
         self.__chain.set_active_port(port)
 
diff --git a/kvmd/apps/kvmd/switch/chain.py b/kvmd/apps/kvmd/switch/chain.py
index 4bd9b4eb..386fb7bf 100644
--- a/kvmd/apps/kvmd/switch/chain.py
+++ b/kvmd/apps/kvmd/switch/chain.py
@@ -55,6 +55,14 @@ class _CmdSetActual(_BaseCmd):
     actual: bool
 
 
+class _CmdSetActivePrev(_BaseCmd):
+    pass
+
+
+class _CmdSetActiveNext(_BaseCmd):
+    pass
+
+
 @dataclasses.dataclass(frozen=True)
 class _CmdSetActivePort(_BaseCmd):
     port: int
@@ -212,6 +220,12 @@ class Chain:  # pylint: disable=too-many-instance-attributes
 
     # =====
 
+    def set_active_prev(self) -> None:
+        self.__queue_cmd(_CmdSetActivePrev())
+
+    def set_active_next(self) -> None:
+        self.__queue_cmd(_CmdSetActiveNext())
+
     def set_active_port(self, port: int) -> None:
         self.__queue_cmd(_CmdSetActivePort(port))
 
@@ -330,10 +344,29 @@ class Chain:  # pylint: disable=too-many-instance-attributes
                 case _CmdSetActual():
                     self.__actual = cmd.actual
 
+                case _CmdSetActivePrev():
+                    if len(self.__units) > 0:
+                        port = self.__active_port
+                        port -= 1
+                        if port >= 0:
+                            self.__active_port = port
+                            self.__queue_event(PortActivatedEvent(self.__active_port))
+
+                case _CmdSetActiveNext():
+                    port = self.__active_port
+                    if port < 0:
+                        port = 0
+                    else:
+                        port += 1
+                    if port < len(self.__units) * 4:
+                        self.__active_port = port
+                        self.__queue_event(PortActivatedEvent(self.__active_port))
+
                 case _CmdSetActivePort():
                     # Может быть вызвано изнутри при синхронизации
-                    self.__active_port = cmd.port
-                    self.__queue_event(PortActivatedEvent(self.__active_port))
+                    if cmd.port < len(self.__units) * 4:
+                        self.__active_port = cmd.port
+                        self.__queue_event(PortActivatedEvent(self.__active_port))
 
                 case _CmdSetPortBeacon():
                     (unit, ch) = self.get_real_unit_channel(cmd.port)
diff --git a/kvmd/clients/kvmd.py b/kvmd/clients/kvmd.py
index 1fd89e1b..c6a286f0 100644
--- a/kvmd/clients/kvmd.py
+++ b/kvmd/clients/kvmd.py
@@ -136,6 +136,26 @@ class _AtxApiPart(_BaseApiPart):
             raise
 
 
+class _SwitchApiPart(_BaseApiPart):
+    async def set_active_prev(self) -> None:
+        session = self._ensure_http_session()
+        async with session.post("/switch/set_active_prev") as resp:
+            htclient.raise_not_200(resp)
+
+    async def set_active_next(self) -> None:
+        session = self._ensure_http_session()
+        async with session.post("/switch/set_active_next") as resp:
+            htclient.raise_not_200(resp)
+
+    async def set_active(self, port: int) -> None:
+        session = self._ensure_http_session()
+        async with session.post(
+            url="/switch/set_active",
+            params={"port": port},
+        ) as resp:
+            htclient.raise_not_200(resp)
+
+
 # =====
 class KvmdClientWs:
     def __init__(self, ws: aiohttp.ClientWebSocketResponse) -> None:
@@ -213,6 +233,7 @@ class KvmdClientSession(BaseHttpClientSession):
         self.streamer = _StreamerApiPart(self._ensure_http_session)
         self.hid = _HidApiPart(self._ensure_http_session)
         self.atx = _AtxApiPart(self._ensure_http_session)
+        self.switch = _SwitchApiPart(self._ensure_http_session)
 
     @contextlib.asynccontextmanager
     async def ws(self) -> AsyncGenerator[KvmdClientWs, None]: