diff --git a/server/src/wled_controller/api/schemas.py b/server/src/wled_controller/api/schemas.py
index fa5fbbc..8f25811 100644
--- a/server/src/wled_controller/api/schemas.py
+++ b/server/src/wled_controller/api/schemas.py
@@ -172,6 +172,8 @@ class ProcessingState(BaseModel):
     wled_name: Optional[str] = Field(None, description="WLED device name")
     wled_version: Optional[str] = Field(None, description="WLED firmware version")
     wled_led_count: Optional[int] = Field(None, description="LED count reported by WLED device")
+    wled_rgbw: Optional[bool] = Field(None, description="Whether WLED device uses RGBW LEDs")
+    wled_led_type: Optional[str] = Field(None, description="LED chip type (e.g. WS2812B, SK6812 RGBW)")
     wled_last_checked: Optional[datetime] = Field(None, description="Last health check time")
     wled_error: Optional[str] = Field(None, description="Last health check error")
 
diff --git a/server/src/wled_controller/core/processor_manager.py b/server/src/wled_controller/core/processor_manager.py
index 198b311..dc149b4 100644
--- a/server/src/wled_controller/core/processor_manager.py
+++ b/server/src/wled_controller/core/processor_manager.py
@@ -22,6 +22,19 @@ logger = get_logger(__name__)
 
 DEFAULT_STATE_CHECK_INTERVAL = 30  # seconds between health checks
 
+# WLED LED bus type codes from const.h → human-readable names
+WLED_LED_TYPES: Dict[int, str] = {
+    18: "WS2812 1ch", 19: "WS2812 1ch x3", 20: "WS2812 CCT", 21: "WS2812 WWA",
+    22: "WS2812B", 23: "GS8608", 24: "WS2811 400kHz", 25: "TM1829",
+    26: "UCS8903", 27: "APA106", 28: "FW1906", 29: "UCS8904",
+    30: "SK6812 RGBW", 31: "TM1814", 32: "WS2805", 33: "TM1914", 34: "SM16825",
+    40: "On/Off", 41: "PWM 1ch", 42: "PWM 2ch", 43: "PWM 3ch",
+    44: "PWM 4ch", 45: "PWM 5ch", 46: "PWM 6ch",
+    50: "WS2801", 51: "APA102", 52: "LPD8806", 53: "P9813", 54: "LPD6803",
+    65: "HUB75 HS", 66: "HUB75 QS",
+    80: "DDP RGB", 81: "E1.31", 82: "Art-Net", 88: "DDP RGBW", 89: "Art-Net RGBW",
+}
+
 
 @dataclass
 class ProcessingSettings:
@@ -48,6 +61,8 @@ class DeviceHealth:
     wled_name: Optional[str] = None
     wled_version: Optional[str] = None
     wled_led_count: Optional[int] = None
+    wled_rgbw: Optional[bool] = None
+    wled_led_type: Optional[str] = None
     error: Optional[str] = None
 
 
@@ -433,6 +448,8 @@ class ProcessorManager:
             "wled_name": h.wled_name,
             "wled_version": h.wled_version,
             "wled_led_count": h.wled_led_count,
+            "wled_rgbw": h.wled_rgbw,
+            "wled_led_type": h.wled_led_type,
             "wled_last_checked": h.last_checked,
             "wled_error": h.error,
             "test_mode": state.test_mode_active,
@@ -643,7 +660,23 @@ class ProcessorManager:
             response.raise_for_status()
             data = response.json()
             latency = (time.time() - start) * 1000
-            wled_led_count = data.get("leds", {}).get("count")
+            leds_info = data.get("leds", {})
+            wled_led_count = leds_info.get("count")
+
+            # Fetch LED type from /json/cfg once (it's static config)
+            wled_led_type = state.health.wled_led_type
+            if wled_led_type is None:
+                try:
+                    cfg = await client.get(f"{url}/json/cfg")
+                    cfg.raise_for_status()
+                    cfg_data = cfg.json()
+                    ins = cfg_data.get("hw", {}).get("led", {}).get("ins", [])
+                    if ins:
+                        type_code = ins[0].get("type", 0)
+                        wled_led_type = WLED_LED_TYPES.get(type_code, f"Type {type_code}")
+                except Exception as cfg_err:
+                    logger.debug(f"Could not fetch LED type for {device_id}: {cfg_err}")
+
             state.health = DeviceHealth(
                 online=True,
                 latency_ms=round(latency, 1),
@@ -651,6 +684,8 @@ class ProcessorManager:
                 wled_name=data.get("name"),
                 wled_version=data.get("ver"),
                 wled_led_count=wled_led_count,
+                wled_rgbw=leds_info.get("rgbw", False),
+                wled_led_type=wled_led_type,
                 error=None,
             )
         except Exception as e:
@@ -661,6 +696,8 @@ class ProcessorManager:
                 wled_name=state.health.wled_name,
                 wled_version=state.health.wled_version,
                 wled_led_count=state.health.wled_led_count,
+                wled_rgbw=state.health.wled_rgbw,
+                wled_led_type=state.health.wled_led_type,
                 error=str(e),
             )
 
@@ -684,5 +721,7 @@ class ProcessorManager:
             "wled_name": h.wled_name,
             "wled_version": h.wled_version,
             "wled_led_count": h.wled_led_count,
+            "wled_rgbw": h.wled_rgbw,
+            "wled_led_type": h.wled_led_type,
             "error": h.error,
         }
diff --git a/server/src/wled_controller/static/app.js b/server/src/wled_controller/static/app.js
index 2f73b35..41a0c9a 100644
--- a/server/src/wled_controller/static/app.js
+++ b/server/src/wled_controller/static/app.js
@@ -327,9 +327,10 @@ function renderDisplayLayout(displays) {
     const totalWidth = maxX - minX;
     const totalHeight = maxY - minY;
 
-    // Scale factor to fit in canvas (600px wide max, maintain aspect ratio)
-    const maxCanvasWidth = 600;
-    const maxCanvasHeight = 350;
+    // Scale factor to fit in canvas (respect available width, maintain aspect ratio)
+    const availableWidth = canvas.clientWidth - 60; // account for padding
+    const maxCanvasWidth = Math.min(600, availableWidth);
+    const maxCanvasHeight = 450;
     const scaleX = maxCanvasWidth / totalWidth;
     const scaleY = maxCanvasHeight / totalHeight;
     const scale = Math.min(scaleX, scaleY, 0.3); // Max 0.3 scale to keep monitors reasonably sized
@@ -489,8 +490,8 @@ function createDeviceCard(device) {
         healthTitle = `${t('device.health.online')}`;
         if (wledName) healthTitle += ` - ${wledName}`;
         if (wledVersion) healthTitle += ` v${wledVersion}`;
-        healthLabel = wledLatency !== null && wledLatency !== undefined
-            ? `<span class="health-latency">${Math.round(wledLatency)}ms</span>` : '';
+        if (wledLatency !== null && wledLatency !== undefined) healthTitle += ` (${Math.round(wledLatency)}ms)`;
+        healthLabel = '';
     } else {
         healthClass = 'health-offline';
         healthTitle = t('device.health.offline');
@@ -498,21 +499,27 @@ function createDeviceCard(device) {
         healthLabel = `<span class="health-latency offline">${t('device.health.offline')}</span>`;
     }
 
+    const displayIndex = settings.display_index !== undefined ? settings.display_index : 0;
+    const ledCount = state.wled_led_count || device.led_count;
+
     return `
         <div class="card" data-device-id="${device.id}">
+            <button class="card-remove-btn" onclick="removeDevice('${device.id}')" title="${t('device.button.remove')}">&#x2715;</button>
             <div class="card-header">
                 <div class="card-title">
                     <span class="health-dot ${healthClass}" title="${healthTitle}"></span>
                     ${device.name || device.id}
-                    ${wledVersion ? `<span class="wled-version">v${wledVersion}</span>` : ''}
                     ${healthLabel}
-                </div>
-                <div class="card-header-badges">
-                    <span class="display-badge" title="${t('device.display')} ${settings.display_index !== undefined ? settings.display_index : 0}">🖥️${settings.display_index !== undefined ? settings.display_index : 0}</span>
-                    ${state.wled_led_count ? `<span class="led-count-badge" title="${t('device.led_count')} ${state.wled_led_count}">💡${state.wled_led_count}</span>` : ''}
                     ${isProcessing ? `<span class="badge processing">${t('device.status.processing')}</span>` : ''}
                 </div>
             </div>
+            <div class="card-subtitle">
+                ${wledVersion ? `<span class="card-meta">v${wledVersion}</span>` : ''}
+                <span class="card-meta" title="${t('device.display')}">🖥️ ${displayIndex}</span>
+                ${ledCount ? `<span class="card-meta" title="${t('device.led_count')}">💡 ${ledCount}</span>` : ''}
+                ${state.wled_led_type ? `<span class="card-meta">🔌 ${state.wled_led_type.replace(/ RGBW$/, '')}</span>` : ''}
+                <span class="card-meta" title="${state.wled_rgbw ? 'RGBW' : 'RGB'}"><span class="channel-indicator"><span class="ch" style="background:#e53935"></span><span class="ch" style="background:#43a047"></span><span class="ch" style="background:#1e88e5"></span>${state.wled_rgbw ? '<span class="ch" style="background:#eee"></span>' : ''}</span></span>
+            </div>
             <div class="card-content">
                 <div class="info-row">
                     <span class="info-label">${t('device.url')}</span>
@@ -565,9 +572,6 @@ function createDeviceCard(device) {
                 <button class="btn btn-icon btn-secondary" onclick="showPixelPreview('${device.id}')" title="${t('preview.button')}">
                     👁️
                 </button>
-                <button class="btn btn-icon btn-danger" onclick="removeDevice('${device.id}')" title="${t('device.button.remove')}">
-                    🗑️
-                </button>
             </div>
         </div>
     `;
diff --git a/server/src/wled_controller/static/style.css b/server/src/wled_controller/static/style.css
index 9a9f39d..f3305b2 100644
--- a/server/src/wled_controller/static/style.css
+++ b/server/src/wled_controller/static/style.css
@@ -173,6 +173,7 @@ section {
     border: 1px solid var(--border-color);
     border-radius: 8px;
     padding: 20px;
+    position: relative;
     transition: transform 0.2s, box-shadow 0.2s;
 }
 
@@ -180,24 +181,35 @@ section {
     box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
 }
 
+.card-remove-btn {
+    position: absolute;
+    top: 10px;
+    right: 10px;
+    background: none;
+    border: none;
+    color: #777;
+    font-size: 1rem;
+    width: 28px;
+    height: 28px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    cursor: pointer;
+    border-radius: 4px;
+    transition: color 0.2s, background 0.2s;
+}
+
+.card-remove-btn:hover {
+    color: var(--danger-color);
+    background: rgba(244, 67, 54, 0.1);
+}
+
 .card-header {
     display: flex;
     justify-content: space-between;
     align-items: center;
-    margin-bottom: 15px;
-}
-
-.card-header-badges {
-    display: flex;
-    align-items: center;
-    gap: 8px;
-}
-
-.display-badge,
-.led-count-badge {
-    font-size: 0.8rem;
-    color: var(--info-color);
-    opacity: 0.8;
+    margin-bottom: 4px;
+    padding-right: 30px;
 }
 
 .card-title {
@@ -206,16 +218,35 @@ section {
     display: flex;
     align-items: center;
     gap: 6px;
+    flex-wrap: wrap;
 }
 
-.wled-version {
-    font-size: 0.65rem;
-    font-weight: 400;
-    color: var(--text-secondary);
-    background: var(--border-color);
-    padding: 1px 6px;
-    border-radius: 8px;
-    letter-spacing: 0.03em;
+.card-subtitle {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    margin-bottom: 15px;
+    flex-wrap: wrap;
+}
+
+.card-meta {
+    font-size: 0.8rem;
+    color: #999;
+    display: inline-flex;
+    align-items: center;
+    gap: 4px;
+}
+
+.channel-indicator {
+    display: inline-flex;
+    gap: 2px;
+    align-items: center;
+}
+
+.channel-indicator .ch {
+    width: 8px;
+    height: 10px;
+    border-radius: 1px;
 }
 
 .badge {
@@ -363,10 +394,11 @@ section {
     border: 2px dashed var(--border-color);
     border-radius: 8px;
     padding: 30px;
-    min-height: 300px;
+    min-height: 280px;
     display: flex;
     align-items: center;
     justify-content: center;
+    overflow: hidden;
 }
 
 .layout-container {