diff --git a/cmd/syncthing/gui.go b/cmd/syncthing/gui.go
index b45e6b36e..c5b67c9e4 100644
--- a/cmd/syncthing/gui.go
+++ b/cmd/syncthing/gui.go
@@ -104,6 +104,7 @@ type configIntf interface {
 	Folders() map[string]config.FolderConfiguration
 	Devices() map[protocol.DeviceID]config.DeviceConfiguration
 	SetDevice(config.DeviceConfiguration) error
+	SetDevices([]config.DeviceConfiguration) error
 	Save() error
 	ListenAddresses() []string
 	RequiresRestart() bool
@@ -269,8 +270,8 @@ func (s *apiService) Serve() {
 	postRestMux.HandleFunc("/rest/system/restart", s.postSystemRestart)            // -
 	postRestMux.HandleFunc("/rest/system/shutdown", s.postSystemShutdown)          // -
 	postRestMux.HandleFunc("/rest/system/upgrade", s.postSystemUpgrade)            // -
-	postRestMux.HandleFunc("/rest/system/pause", s.makeDevicePauseHandler(true))   // device
-	postRestMux.HandleFunc("/rest/system/resume", s.makeDevicePauseHandler(false)) // device
+	postRestMux.HandleFunc("/rest/system/pause", s.makeDevicePauseHandler(true))   // [device]
+	postRestMux.HandleFunc("/rest/system/resume", s.makeDevicePauseHandler(false)) // [device]
 	postRestMux.HandleFunc("/rest/system/debug", s.postSystemDebug)                // [enable] [disable]
 
 	// Debug endpoints, not for general use
@@ -1118,19 +1119,31 @@ func (s *apiService) makeDevicePauseHandler(paused bool) http.HandlerFunc {
 		var qs = r.URL.Query()
 		var deviceStr = qs.Get("device")
 
-		device, err := protocol.DeviceIDFromString(deviceStr)
-		if err != nil {
-			http.Error(w, err.Error(), 500)
-			return
+		var cfgs []config.DeviceConfiguration
+
+		if deviceStr == "" {
+			for _, cfg := range s.cfg.Devices() {
+				cfg.Paused = paused
+				cfgs = append(cfgs, cfg)
+			}
+		} else {
+			device, err := protocol.DeviceIDFromString(deviceStr)
+			if err != nil {
+				http.Error(w, err.Error(), 500)
+				return
+			}
+
+			cfg, ok := s.cfg.Devices()[device]
+			if !ok {
+				http.Error(w, "not found", http.StatusNotFound)
+				return
+			}
+
+			cfg.Paused = paused
+			cfgs = append(cfgs, cfg)
 		}
 
-		cfg, ok := s.cfg.Devices()[device]
-		if !ok {
-			http.Error(w, "not found", http.StatusNotFound)
-		}
-
-		cfg.Paused = paused
-		if err := s.cfg.SetDevice(cfg); err != nil {
+		if err := s.cfg.SetDevices(cfgs); err != nil {
 			http.Error(w, err.Error(), 500)
 		}
 	}
diff --git a/cmd/syncthing/mocked_config_test.go b/cmd/syncthing/mocked_config_test.go
index d869ce612..bc825d409 100644
--- a/cmd/syncthing/mocked_config_test.go
+++ b/cmd/syncthing/mocked_config_test.go
@@ -52,6 +52,10 @@ func (c *mockedConfig) SetDevice(config.DeviceConfiguration) error {
 	return nil
 }
 
+func (c *mockedConfig) SetDevices([]config.DeviceConfiguration) error {
+	return nil
+}
+
 func (c *mockedConfig) Save() error {
 	return nil
 }
diff --git a/lib/config/wrapper.go b/lib/config/wrapper.go
index 9df03f698..f3a3f19d8 100644
--- a/lib/config/wrapper.go
+++ b/lib/config/wrapper.go
@@ -187,28 +187,37 @@ func (w *Wrapper) Devices() map[protocol.DeviceID]DeviceConfiguration {
 	return w.deviceMap
 }
 
-// SetDevice adds a new device to the configuration, or overwrites an existing
-// device with the same ID.
-func (w *Wrapper) SetDevice(dev DeviceConfiguration) error {
+// SetDevices adds new devices to the configuration, or overwrites existing
+// devices with the same ID.
+func (w *Wrapper) SetDevices(devs []DeviceConfiguration) error {
 	w.mut.Lock()
 	defer w.mut.Unlock()
 
 	newCfg := w.cfg.Copy()
-	replaced := false
-	for i := range newCfg.Devices {
-		if newCfg.Devices[i].DeviceID == dev.DeviceID {
-			newCfg.Devices[i] = dev
-			replaced = true
-			break
+	var replaced bool
+	for oldIndex := range devs {
+		replaced = false
+		for newIndex := range newCfg.Devices {
+			if newCfg.Devices[newIndex].DeviceID == devs[oldIndex].DeviceID {
+				newCfg.Devices[newIndex] = devs[oldIndex]
+				replaced = true
+				break
+			}
+		}
+		if !replaced {
+			newCfg.Devices = append(newCfg.Devices, devs[oldIndex])
 		}
-	}
-	if !replaced {
-		newCfg.Devices = append(w.cfg.Devices, dev)
 	}
 
 	return w.replaceLocked(newCfg)
 }
 
+// SetDevice adds a new device to the configuration, or overwrites an existing
+// device with the same ID.
+func (w *Wrapper) SetDevice(dev DeviceConfiguration) error {
+	return w.SetDevices([]DeviceConfiguration{dev})
+}
+
 // RemoveDevice removes the device from the configuration
 func (w *Wrapper) RemoveDevice(id protocol.DeviceID) error {
 	w.mut.Lock()