diff --git a/agent/agent.py b/agent/agent.py
index 259e106..8630943 100644
--- a/agent/agent.py
+++ b/agent/agent.py
@@ -247,7 +247,7 @@ def collect_smart(device: str):
 		'user_capacity'      : data.get('user_capacity', {}).get('bytes', 0),
 		'rotation_rate'      : data.get('rotation_rate', 0),
 		'form_factor'        : data.get('form_factor', {}).get('name', ''),
-		'protocol'           : data.get('device', {}).get('protocol', 'Unknown'),
+		'protocol'           : data.get('device', {}).get('protocol', '') or '',
 		'sata_version'       : data.get('sata_version', {}).get('string', ''),
 		'smart_attributes'   : [],
 		'sas_error_counters' : None,
@@ -276,6 +276,35 @@ def collect_smart(device: str):
 	return info
 
 
+def collect_udev_info(device: str):
+	'''
+	Query udevadm for device properties as a fallback when smartctl lacks data
+	(e.g. USB flash drives that aren't in smartctl's drivedb).
+
+	:param device: Block device path (e.g. /dev/sde)
+	'''
+
+	out, _, rc = run_cmd(['udevadm', 'info', '--query=property', f'--name={device}'], timeout=5)
+	if rc != 0:
+		return {}
+	props = {}
+	for line in out.splitlines():
+		if '=' in line:
+			k, v = line.split('=', 1)
+			props[k] = v
+	info = {}
+	vendor = (props.get('ID_VENDOR') or props.get('ID_USB_VENDOR') or '').replace('_', ' ').strip()
+	model  = (props.get('ID_MODEL')  or props.get('ID_USB_MODEL')  or '').replace('_', ' ').strip()
+	if vendor and model:
+		info['model_family'] = f'{vendor} {model}'
+	elif vendor:
+		info['model_family'] = vendor
+	bus = (props.get('ID_BUS') or '').lower()
+	if bus:
+		info['protocol'] = bus.upper()
+	return info
+
+
 def collect_disks():
 	'''Enumerate physical disks via lsblk and collect SMART data in parallel.'''
 
@@ -315,6 +344,14 @@ def collect_disks():
 					logging.warning('SMART failed for %s: %s', disk['name'], e)
 
 	for d in devs:
+		if not d.get('model_family') or not d.get('protocol'):
+			udev = collect_udev_info(d['path'])
+			if not d.get('model_family') and udev.get('model_family'):
+				d['model_family'] = udev['model_family']
+			if not d.get('protocol') and udev.get('protocol'):
+				d['protocol'] = udev['protocol']
+		if not d.get('protocol') and d.get('transport'):
+			d['protocol'] = d['transport'].upper()
 		d['health_score'] = compute_health_score(d)
 
 	with lock:
diff --git a/dashboard/templates/index.html b/dashboard/templates/index.html
index e65901a..9c4083c 100644
--- a/dashboard/templates/index.html
+++ b/dashboard/templates/index.html
@@ -343,13 +343,13 @@ function renderDisks(disks){
     if(!disks||!disks.length){el.innerHTML='<tr><td colspan="11" class="empty">No disks detected</td></tr>';badge.textContent='0';return}
     badge.textContent=disks.length;
     el.innerHTML=disks.map((d,i)=>{
-        const proto=(d.protocol||d.transport||'').toUpperCase();
+        const proto=((d.transport&&d.transport.toLowerCase()!=='unknown'?d.transport:d.protocol)||'').toUpperCase();
         let dtc='dtb';if(proto.includes('SAS')||proto.includes('SCSI'))dtc+=' dtb-sas';else if(proto.includes('NVME'))dtc+=' dtb-nv';
         const ht=d.health===true?'PASSED':d.health===false?'FAILED':'N/A';
         const hs=d.health_score!=null?d.health_score:'-';
         const hasSmart=d.health===true||d.health===false||(d.smart_attributes&&d.smart_attributes.length)||(d.sas_error_counters);
         const model=d.device_model||d.model||'—',family=d.model_family||'—',serial=d.serial_number||d.serial||'—';
-        return`<tr class="${hasSmart?'disk-row':''}" ${hasSmart?`onclick="toggleDiskDetail(this,${i})"`:''} style="${hasSmart?'':'cursor:default;opacity:.7'}"><td title="/dev/${d.name}">/dev/${d.name}</td><td title="${model}">${model.substring(0,30)}</td><td title="${family}">${family.substring(0,30)}</td><td title="${serial}" style="font-family:var(--mono);font-size:.68rem">${serial}</td><td class="r" title="${Br(d.user_capacity||d.size)}">${Br(d.user_capacity||d.size)}</td><td class="r ${tc(d.temperature)}" title="${d.temperature!=null?d.temperature+'°C / '+cToF(d.temperature)+'°F':'—'}">${d.temperature!=null?cToF(d.temperature)+'°F':'—'}</td><td class="r" title="${fmtH(d.power_on_hours)}">${fmtH(d.power_on_hours)}</td><td class="r">${d.rotation_rate||'—'}</td><td>${fmtForm(d.form_factor)}</td><td title="${proto||'?'}"><span class="${dtc}">${proto||'?'}</span></td><td><span class="score-badge" style="background:${scoreBg(hs)};color:${scoreCol(hs)}" title="${scoreLabel(hs)} — SMART ${ht}">${hs}/100</span></td></tr>`}).join('');
+        return`<tr class="${hasSmart?'disk-row':''}" ${hasSmart?`onclick="toggleDiskDetail(this,${i})"`:''} style="${hasSmart?'':'cursor:default;opacity:.7'}"><td title="/dev/${d.name}">/dev/${d.name}</td><td title="${model}">${model}</td><td title="${family}">${family}</td><td title="${serial}" style="font-family:var(--mono);font-size:.68rem">${serial}</td><td class="r" title="${Br(d.user_capacity||d.size)}">${Br(d.user_capacity||d.size)}</td><td class="r ${tc(d.temperature)}" title="${d.temperature!=null?d.temperature+'°C / '+cToF(d.temperature)+'°F':'—'}">${d.temperature!=null?cToF(d.temperature)+'°F':'—'}</td><td class="r" title="${fmtH(d.power_on_hours)}">${fmtH(d.power_on_hours)}</td><td class="r">${d.rotation_rate||'—'}</td><td>${fmtForm(d.form_factor)}</td><td title="${proto||'?'}"><span class="${dtc}">${proto||'?'}</span></td><td><span class="score-badge" style="background:${scoreBg(hs)};color:${scoreCol(hs)}" title="${scoreLabel(hs)} — SMART ${ht}">${hs}/100</span></td></tr>`}).join('');
     if(_expanded.disks.size){disks.forEach((d,i)=>{if(_expanded.disks.has(d.name)){const rows=el.querySelectorAll('.disk-row');if(rows[i])toggleDiskDetail(rows[i],i)}})}
 }