diff --git a/src/platform/linux.rs b/src/platform/linux.rs
index 5161a942..b3fc00c4 100644
--- a/src/platform/linux.rs
+++ b/src/platform/linux.rs
@@ -10,7 +10,7 @@ pub fn capabilities() -> PlatformCapabilities {
         encoder: FeatureCapability::available([
             "software", "vaapi", "nvenc", "qsv", "amf", "rkmpp", "v4l2m2m",
         ]),
-        hid: FeatureCapability::available(["otg", "ch9329", "none"]),
+        hid: FeatureCapability::available(["otg", "ch9329", "bluetooth", "none"]),
         atx: FeatureCapability::available(["gpio", "usb_relay", "serial", "wol", "none"]),
         msd: FeatureCapability::available(["configfs"]),
         otg: FeatureCapability::available(["configfs"]),
diff --git a/web/src/components/HidDriverDialog.vue b/web/src/components/HidDriverDialog.vue
index 96953e07..cf2eff5b 100644
--- a/web/src/components/HidDriverDialog.vue
+++ b/web/src/components/HidDriverDialog.vue
@@ -4,6 +4,7 @@ import { useI18n } from 'vue-i18n'
 import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription, DialogFooter } from '@/components/ui/dialog'
 import { Button } from '@/components/ui/button'
 import { useConfigStore } from '@/stores/config'
+import { useSystemStore } from '@/stores/system'
 import { request } from '@/api/request'
 import type { HidConfig, MsdConfig } from '@/types/generated'
 import { useHidConnection } from '@/composables/useHidConnection'
@@ -14,6 +15,9 @@ import HidDeviceOverview from './HidDeviceOverview.vue'
 const props = defineProps<{ dirty?: boolean }>()
 const emit = defineEmits<{ close: []; applied: []; discard: [] }>()
 const { t } = useI18n(), store = useConfigStore()
+const systemStore = useSystemStore()
+const otgSupported = computed(() => systemStore.platform?.otg.available === true)
+const msdSupported = computed(() => systemStore.platform?.msd.available === true)
 const draft = ref<HidSelection>(selectionFrom(store.hid))
 const valid = ref(false), busy = ref(false), error = ref(''), applied = ref(false), loaded = ref(false)
 const acknowledged = ref(!props.dirty), uncertain = ref(false)
@@ -52,7 +56,12 @@ async function refreshMsd() {
   return msd
 }
 async function refreshConfigs() {
-  const results = await Promise.allSettled([refreshHid(), refreshMsd(), readConfig<{ enabled: boolean }>('/config/otg-network'), readConfig<{ enabled: boolean }>('/config/uac')])
+  const requests: Promise<unknown>[] = [refreshHid()]
+  if (msdSupported.value) requests.push(refreshMsd())
+  if (otgSupported.value) {
+    requests.push(readConfig<{ enabled: boolean }>('/config/otg-network'), readConfig<{ enabled: boolean }>('/config/uac'))
+  }
+  const results = await Promise.allSettled(requests)
   emit('applied')
   const failure = results.find(r => r.status === 'rejected')
   if (failure?.status === 'rejected') throw failure.reason
@@ -115,9 +124,10 @@ async function close() {
 async function load() {
   loaded.value = false; error.value = ''
   try {
+    if (!systemStore.platform) await systemStore.fetchSystemInfo()
     await refreshHid()
     draft.value = selectionFrom(store.hid)
-    if (store.hid?.backend === 'otg') {
+    if (otgSupported.value && store.hid?.backend === 'otg') {
       const [msd, network, audio] = await Promise.all([refreshMsd(), readConfig<{ enabled: boolean }>('/config/otg-network'), readConfig<{ enabled: boolean }>('/config/uac')])
       disabledUsb.value = [msd.enabled ? t('hidGuide.msd') : '', network.enabled ? t('hidGuide.network') : '', audio.enabled ? t('hidGuide.audio') : ''].filter(Boolean)
     }
@@ -141,7 +151,7 @@ onMounted(load)
         </div>
       </div>
       <template v-else>
-        <HidDriverForm v-if="!applied" v-model="draft" :locked="busy || !loaded" @valid="valid = $event" />
+        <HidDriverForm v-if="!applied" v-model="draft" :platform="systemStore.platform" :locked="busy || !loaded" @valid="valid = $event" />
         <template v-else>
           <HidWiringDiagram :backend="draft.backend" />
           <HidDeviceOverview :hid="store.hid" :status="status" :bluetooth="bluetooth" :error="statusError" />
diff --git a/web/src/components/HidDriverForm.vue b/web/src/components/HidDriverForm.vue
index bf23b963..7bebdfdd 100644
--- a/web/src/components/HidDriverForm.vue
+++ b/web/src/components/HidDriverForm.vue
@@ -6,19 +6,20 @@ import { Input } from '@/components/ui/input'
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select'
 import { HoverCard, HoverCardContent, HoverCardTrigger } from '@/components/ui/hover-card'
 import { Cable, RefreshCw } from 'lucide-vue-next'
-import { configApi } from '@/api'
+import { configApi, type PlatformCapabilities } from '@/api'
 import { request } from '@/api/request'
 import type { BluetoothAdapter } from '@/types/bluetooth'
 import { selectDevice, validName, type HidSelection, type Driver } from '@/lib/hidGuide'
 import HidWiringDiagram from './HidWiringDiagram.vue'
-const props = defineProps<{ modelValue: HidSelection; locked?: boolean }>()
+const props = defineProps<{ modelValue: HidSelection; platform: PlatformCapabilities | null; locked?: boolean }>()
 const emit = defineEmits<{ 'update:modelValue': [HidSelection]; valid: [boolean] }>()
 const { t } = useI18n()
 const EMPTY_SELECT_VALUE = '__one-kvm-empty-select-value__'
 const options = ref<Array<{ value: string; label: string }>>([])
 const loading = ref(false), error = ref(''), missing = ref('')
 let generation = 0
-const drivers: Driver[] = ['otg', 'ch9329', 'bluetooth', 'none']
+const drivers = computed(() => (['otg', 'ch9329', 'bluetooth', 'none'] as Driver[])
+  .filter(driver => props.platform?.hid.backends.includes(driver)))
 const selected = computed(() => props.modelValue.backend === 'otg' ? props.modelValue.otg_udc : props.modelValue.backend === 'ch9329' ? props.modelValue.ch9329_port : props.modelValue.bluetooth.adapter)
 function device(value: string) {
   const draft = { ...props.modelValue, bluetooth: { ...props.modelValue.bluetooth } }
@@ -31,7 +32,7 @@ async function refresh() {
   const own = ++generation
   options.value = []; error.value = ''; missing.value = ''; loading.value = true
   try {
-    if (props.modelValue.backend === 'none') return
+    if (!drivers.value.includes(props.modelValue.backend) || props.modelValue.backend === 'none') return
     let next: typeof options.value
     if (props.modelValue.backend === 'bluetooth') {
       next = (await request<BluetoothAdapter[]>('/hid/bluetooth/adapters')).map(a => ({ value: a.name, label: `${a.name} · ${a.address}` }))
@@ -47,11 +48,11 @@ async function refresh() {
   } catch (e) { if (own === generation) error.value = e instanceof Error ? e.message : String(e) }
   finally { if (own === generation) loading.value = false }
 }
-const valid = computed(() => props.modelValue.backend === 'none' || (!loading.value && !error.value && options.value.some(d => d.value === selected.value)
+const valid = computed(() => drivers.value.includes(props.modelValue.backend) && (props.modelValue.backend === 'none' || (!loading.value && !error.value && options.value.some(d => d.value === selected.value)
   && (props.modelValue.backend !== 'bluetooth' || validName(props.modelValue.bluetooth.name))
-  && (props.modelValue.backend !== 'ch9329' || [9600, 19200, 38400, 57600, 115200].includes(props.modelValue.ch9329_baudrate))))
+  && (props.modelValue.backend !== 'ch9329' || [9600, 19200, 38400, 57600, 115200].includes(props.modelValue.ch9329_baudrate)))))
 watch(valid, value => emit('valid', value), { immediate: true })
-watch(() => props.modelValue.backend, refresh, { immediate: true })
+watch(() => [props.modelValue.backend, drivers.value.includes(props.modelValue.backend)], refresh, { immediate: true })
 onUnmounted(() => generation++)
 </script>
 <template>
diff --git a/web/src/i18n/en-US.ts b/web/src/i18n/en-US.ts
index ad2c85bb..7c519a1f 100644
--- a/web/src/i18n/en-US.ts
+++ b/web/src/i18n/en-US.ts
@@ -742,6 +742,7 @@ export default {
     httpsManualRedirectDesc: 'HTTPS with a self-signed certificate requires browser approval. Click the link and choose "Proceed" on the security warning.',
     onlineUpgrade: 'Online Upgrade',
     onlineUpgradeDesc: 'Check and upgrade One-KVM',
+    onlineUpgradeUnsupported: 'Online upgrades are not supported on this platform. Download the new version and replace the program manually.',
     updateChannel: 'Update Channel',
     currentVersion: 'Current Version',
     latestVersion: 'Latest Version',
diff --git a/web/src/i18n/zh-CN.ts b/web/src/i18n/zh-CN.ts
index 8cc48a7e..62c1b302 100644
--- a/web/src/i18n/zh-CN.ts
+++ b/web/src/i18n/zh-CN.ts
@@ -741,6 +741,7 @@ export default {
     httpsManualRedirectDesc: 'HTTPS 自签名证书需要在浏览器中手动接受，点击链接后在安全警告页选择"继续访问"即可。',
     onlineUpgrade: '在线升级',
     onlineUpgradeDesc: '检查并升级 One-KVM',
+    onlineUpgradeUnsupported: '当前平台暂不支持在线升级，请下载新版本并手动替换程序。',
     updateChannel: '升级通道',
     currentVersion: '当前版本',
     latestVersion: '最新版本',
diff --git a/web/src/stores/system.ts b/web/src/stores/system.ts
index 0d615da9..8da24c07 100644
--- a/web/src/stores/system.ts
+++ b/web/src/stores/system.ts
@@ -260,6 +260,11 @@ export const useSystemStore = defineStore('system', () => {
 
   async function fetchMsdState() {
     try {
+      if (!platform.value) await fetchSystemInfo()
+      if (!platform.value?.msd.available) {
+        msd.value = null
+        return null
+      }
       const result = await msdApi.status()
       msd.value = {
         available: result.available,
@@ -306,12 +311,13 @@ export const useSystemStore = defineStore('system', () => {
     error.value = null
 
     try {
+      const systemInfoRequest = fetchSystemInfo()
       await Promise.all([
-        fetchSystemInfo(),
+        systemInfoRequest,
         fetchStreamState().catch(() => null),
         fetchHidState().catch(() => null),
         fetchAtxState().catch(() => null),
-        fetchMsdState().catch(() => null),
+        systemInfoRequest.then(() => fetchMsdState()).catch(() => null),
       ])
     } catch (e) {
       error.value = e instanceof Error ? e.message : 'Failed to fetch states'
diff --git a/web/src/views/ConsoleView.vue b/web/src/views/ConsoleView.vue
index b7962dc0..646b86c7 100644
--- a/web/src/views/ConsoleView.vue
+++ b/web/src/views/ConsoleView.vue
@@ -86,7 +86,8 @@ const unifiedAudio = getUnifiedAudio()
 const microphone = getMicrophone()
 const uacEnabled = ref(false)
 const microphoneTransferEnabled = computed(() => (
-  uacEnabled.value && configStore.hid?.backend === HidBackend.Otg
+  systemStore.platform?.otg.available === true
+  && uacEnabled.value && configStore.hid?.backend === HidBackend.Otg
 ))
 const videoSession = useVideoSession()
 
@@ -3124,6 +3125,11 @@ function handleToggleMouseMode() {
 
 async function refreshUacAvailability() {
   try {
+    if (!systemStore.platform) await systemStore.fetchSystemInfo()
+    if (!systemStore.platform?.otg.available) {
+      uacEnabled.value = false
+      return
+    }
     const uacConfig = await uacApi.get()
     uacEnabled.value = uacConfig.enabled
   } catch {
diff --git a/web/src/views/SettingsView.vue b/web/src/views/SettingsView.vue
index 02f50f09..2240822f 100644
--- a/web/src/views/SettingsView.vue
+++ b/web/src/views/SettingsView.vue
@@ -172,6 +172,10 @@ const consoleLayoutOptions: Array<{
 const EMPTY_SELECT_VALUE = '__one-kvm-empty-select-value__'
 
 const isWindows = computed(() => systemStore.platform?.mode === 'windows')
+const otgSupported = computed(() => systemStore.platform?.otg.available === true)
+const msdSupported = computed(() => systemStore.platform?.msd.available === true)
+const usbResetSupported = computed(() => systemStore.platform?.mode === 'linux')
+const onlineUpgradeSupported = computed(() => systemStore.platform?.mode === 'linux')
 
 const activeSection = ref<SettingsSectionId>('appearance')
 const loading = ref(false)
@@ -903,6 +907,7 @@ function otgCheckHint(item: OtgSelfCheckItem): string {
 }
 
 async function runOtgSelfCheck() {
+  if (!otgSupported.value) return
   otgSelfCheckLoading.value = true
   otgSelfCheckError.value = ''
   try {
@@ -988,6 +993,10 @@ const usbResetTarget = ref<import('@/api').UsbDeviceInfo | null>(null)
 const usbResetLoading = ref(false)
 
 async function fetchUsbDevices() {
+  if (!usbResetSupported.value) {
+    usbDevices.value = []
+    return
+  }
   usbDevicesLoading.value = true
   usbDevicesError.value = ''
   try {
@@ -1000,7 +1009,7 @@ async function fetchUsbDevices() {
 }
 
 async function confirmUsbReset() {
-  if (!usbResetTarget.value) return
+  if (!usbResetSupported.value || !usbResetTarget.value) return
   usbResetLoading.value = true
   try {
     await usbApi.resetDevice(usbResetTarget.value.bus_num, usbResetTarget.value.dev_num)
@@ -1521,7 +1530,9 @@ async function saveConfig() {
     saveError.value = error instanceof Error ? error.message : t('api.operationFailedDesc')
     if (activeSection.value === 'hid') {
       await loadConfig().catch(() => undefined)
-      otgNetworkStatus.value = await otgNetworkApi.status().catch(() => null)
+      otgNetworkStatus.value = otgSupported.value
+        ? await otgNetworkApi.status().catch(() => null)
+        : null
     }
   } finally {
     loading.value = false
@@ -1543,15 +1554,17 @@ async function loadConfig() {
       configStore.refreshVideo(),
       configStore.refreshStream(),
       configStore.refreshHid(),
-      configStore.refreshMsd(),
-      otgNetworkApi.get().catch(() => ({
+      msdSupported.value ? configStore.refreshMsd() : Promise.resolve(null),
+      otgSupported.value ? otgNetworkApi.get().catch(() => ({
         enabled: false,
         driver_mode: 'ncm' as const,
         bridge_interface: '',
         host_mac: '',
         device_mac: '',
-      })),
-      uacApi.get().catch(() => ({ enabled: false, sample_rate: 48000, channels: 2 })),
+      })) : Promise.resolve(null),
+      otgSupported.value
+        ? uacApi.get().catch(() => ({ enabled: false, sample_rate: 48000, channels: 2 }))
+        : Promise.resolve(null),
     ])
 
     config.value = {
@@ -1572,14 +1585,14 @@ async function loadConfig() {
         consumer: hid.otg_functions?.consumer ?? true,
       } as OtgHidFunctions,
       hid_otg_keyboard_leds: hid.otg_keyboard_leds ?? false,
-      msd_enabled: msd.enabled || false,
-      msd_dir: msd.msd_dir || '',
-      msd_flash_inquiry_string: msd.flash_inquiry_string || 'One-KVM Virtual Flash',
-      msd_cdrom_inquiry_string: msd.cdrom_inquiry_string || 'One-KVM Virtual CD-ROM',
-      otg_network_enabled: otgNetwork.enabled,
-      otg_network_driver: otgNetwork.driver_mode,
-      uac_enabled: uac.enabled,
-      otg_network_interface: otgNetwork.bridge_interface,
+      msd_enabled: msd?.enabled || false,
+      msd_dir: msd?.msd_dir || '',
+      msd_flash_inquiry_string: msd?.flash_inquiry_string || 'One-KVM Virtual Flash',
+      msd_cdrom_inquiry_string: msd?.cdrom_inquiry_string || 'One-KVM Virtual CD-ROM',
+      otg_network_enabled: otgNetwork?.enabled ?? false,
+      otg_network_driver: otgNetwork?.driver_mode ?? 'ncm',
+      uac_enabled: uac?.enabled ?? false,
+      otg_network_interface: otgNetwork?.bridge_interface ?? '',
       encoder_backend: stream.encoder || 'auto',
       stun_server: stream.stun_server || '',
       turn_server: stream.turn_server || '',
@@ -1607,7 +1620,9 @@ async function loadConfig() {
     } else {
       clearCh9329DescriptorState()
     }
-    otgNetworkStatus.value = await otgNetworkApi.status().catch(() => null)
+    otgNetworkStatus.value = otgSupported.value
+      ? await otgNetworkApi.status().catch(() => null)
+      : null
     await nextTick()
     hidFeatureBaseline.value = hidFeatureSnapshot()
   } catch {
@@ -1623,6 +1638,11 @@ async function loadDeviceConfig() {
 
 async function loadOtgNetworkInterfaces() {
   otgNetworkInterfacesError.value = ''
+  if (!otgSupported.value) {
+    otgNetworkInterfaces.value = []
+    otgNetworkInterfacesLoaded.value = false
+    return
+  }
   try {
     otgNetworkInterfaces.value = await otgNetworkApi.interfaces()
     otgNetworkInterfacesLoaded.value = true
@@ -2331,6 +2351,7 @@ function startUpdatePolling() {
 }
 
 async function startOnlineUpgrade() {
+  if (!onlineUpgradeSupported.value) return
   try {
     updateSawRestarting.value = false
     updateSawRequestFailure.value = false
@@ -3478,7 +3499,7 @@ watch(isWindows, () => {
               </CardContent>
             </Card>
 
-            <Card>
+            <Card v-if="otgSupported">
               <CardHeader class="flex flex-row items-start justify-between space-y-0">
                 <div class="space-y-1.5">
                   <CardTitle>{{ t('settings.otgSelfCheck.title') }}</CardTitle>
@@ -3691,7 +3712,7 @@ watch(isWindows, () => {
               </CardContent>
             </Card>
 
-            <Card>
+            <Card v-if="usbResetSupported">
               <CardHeader class="flex flex-row items-start justify-between space-y-0">
                 <div class="space-y-1.5">
                   <CardTitle>{{ t('settings.usbDevices.title') }}</CardTitle>
@@ -3766,7 +3787,7 @@ watch(isWindows, () => {
             </Card>
 
             <!-- USB Reset Confirmation Dialog -->
-            <AlertDialog :open="usbResetTarget != null">
+            <AlertDialog v-if="usbResetSupported" :open="usbResetTarget != null">
               <AlertDialogContent>
                 <AlertDialogHeader>
                   <AlertDialogTitle>{{ t('settings.usbDevices.resetConfirmTitle') }}</AlertDialogTitle>
@@ -5375,7 +5396,10 @@ watch(isWindows, () => {
                   </div>
                 </div>
 
-                <div class="flex justify-end gap-2">
+                <p v-if="!onlineUpgradeSupported" class="text-sm text-muted-foreground">
+                  {{ t('settings.onlineUpgradeUnsupported') }}
+                </p>
+                <div v-else class="flex justify-end gap-2">
                   <Button
                     :disabled="updateRunning || !updateOverview?.upgrade_available"
                     @click="startOnlineUpgrade"
diff --git a/web/src/views/SetupView.vue b/web/src/views/SetupView.vue
index e5ed58bf..582d9b66 100644
--- a/web/src/views/SetupView.vue
+++ b/web/src/views/SetupView.vue
@@ -699,7 +699,7 @@ const stepIcons = [User, Video, Keyboard, Puzzle]
           <div v-else-if="step === 3" key="step3" class="space-y-4">
             <h3 class="text-lg font-medium text-center">{{ t('setup.stepHid') }}</h3>
 
-            <HidDriverForm v-model="hidSelection" @valid="hidSelectionValid = $event" />
+            <HidDriverForm v-model="hidSelection" :platform="platform" @valid="hidSelectionValid = $event" />
           </div>
 
           <!-- Step 4: Extensions Settings -->