diff --git a/README.md b/README.md
index e028d51..0d77e6e 100644
--- a/README.md
+++ b/README.md
@@ -37,6 +37,11 @@ Datacenter Modeler is a React-based web application for designing datacenter rac
 - Edit component port-map properties for Switch, Firewall, Storage Switch, Router, Server, Blade Chassis, Storage Array, and KVM:
   - Dynamic port map with Port ID, Cable ID, and VLAN fields
   - VLAN defaults to 1 for new component ports
+- Edit managed-device properties for Switch, Firewall, Storage Switch, Router, Server, Blade Chassis, Storage Array, and KVM:
+  - Managed status
+  - IP address/hostname
+  - URL
+  - User
 - Edit PDU-specific properties:
   - Horizontal rack mount or vertical side mount
   - Horizontal size from 1U to 12U
@@ -149,7 +154,7 @@ Diagram data is stored as JSON with this top-level shape:
 }
 ```
 
-Each rack/cabinet contains its own metadata and an array of installed equipment. Equipment records include type, name, size, U position, manufacturer/model details, asset information, power, notes, and display color. Patch panel and network-capable component records also include structured port map metadata. PDU records include mounting orientation, side placement for vertical PDUs, input voltage, output port definitions, and managed-device connection metadata.
+Each rack/cabinet contains its own metadata and an array of installed equipment. Equipment records include type, name, size, U position, manufacturer/model details, asset information, power, notes, and display color. Patch panel and network-capable component records also include structured port map metadata. Network-capable components and PDUs can store managed-device connection metadata.
 
 ## Project Structure
 
diff --git a/src/App.tsx b/src/App.tsx
index d8a3741..3d90e14 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -536,6 +536,10 @@ export default function App() {
                 ? ` | ${item.patchPanelMedium === 'fiberoptic' ? 'Fiber optic' : 'Copper'} | ${item.patchPanelPorts} ports | ${item.patchPanelPortMap.length} mapped`
                 : '';
             const networkPortDetails = PORT_MAPPED_COMPONENTS.has(item.type) ? ` | ${item.networkPorts.length} mapped ports` : '';
+            const managedDetails =
+              PORT_MAPPED_COMPONENTS.has(item.type) && item.managed
+                ? ` | Managed ${item.managedHostname || 'no host'}`
+                : '';
             const pduDetails =
               item.type === 'pdu'
                 ? ` | ${item.pduMount === 'vertical' ? `Vertical ${item.pduSide}, ${item.sizeU}U wide` : `Horizontal ${item.sizeU}U`} | In ${item.pduInputVoltage || 'n/a'} | ${item.pduOutputPorts.length} outputs${item.pduManaged ? ` | Managed ${item.pduHostname || 'no host'}` : ''}`
@@ -544,7 +548,7 @@ export default function App() {
               item.type === 'pdu' && item.pduMount === 'vertical'
                 ? `${item.pduSide === 'left' ? 'Left' : 'Right'} side`
                 : `U${item.uStart}-${item.uStart + item.sizeU - 1}`;
-            const line = `${rackPosition}: ${item.name} | ${item.manufacturer || 'n/a'} ${item.model || ''} | ${item.assetTag || 'no asset tag'}${patchPanelDetails}${networkPortDetails}${pduDetails}`;
+            const line = `${rackPosition}: ${item.name} | ${item.manufacturer || 'n/a'} ${item.model || ''} | ${item.assetTag || 'no asset tag'}${patchPanelDetails}${networkPortDetails}${managedDetails}${pduDetails}`;
             pdf.text(line.slice(0, 115), margin + 12, y);
             y += 14;
           });
@@ -1443,6 +1447,68 @@ function PropertiesPanel({
                 </Stack>
               </>
             )}
+            {PORT_MAPPED_COMPONENTS.has(selectedEquipment.type) && (
+              <>
+                <Divider />
+                <Typography variant="subtitle2" sx={{ fontWeight: 800 }}>
+                  Managed Device
+                </Typography>
+                <Box>
+                  <Typography variant="body2" sx={{ fontWeight: 800 }}>
+                    Managed
+                  </Typography>
+                  <Slider
+                    value={selectedEquipment.managed ? 1 : 0}
+                    min={0}
+                    max={1}
+                    step={1}
+                    marks={[
+                      { value: 0, label: 'No' },
+                      { value: 1, label: 'Yes' },
+                    ]}
+                    onChange={(_, value) =>
+                      onEquipmentChange(selectedEquipmentRack.id, selectedEquipment.id, {
+                        managed: (value as number) === 1,
+                      })
+                    }
+                  />
+                </Box>
+                {selectedEquipment.managed && (
+                  <>
+                    <TextField
+                      label="IP address / hostname"
+                      value={selectedEquipment.managedHostname}
+                      onChange={(event) =>
+                        onEquipmentChange(selectedEquipmentRack.id, selectedEquipment.id, {
+                          managedHostname: event.target.value,
+                        })
+                      }
+                      fullWidth
+                    />
+                    <TextField
+                      label="URL"
+                      value={selectedEquipment.managedUrl}
+                      onChange={(event) =>
+                        onEquipmentChange(selectedEquipmentRack.id, selectedEquipment.id, {
+                          managedUrl: event.target.value,
+                        })
+                      }
+                      fullWidth
+                    />
+                    <TextField
+                      label="User"
+                      value={selectedEquipment.managedUser}
+                      onChange={(event) =>
+                        onEquipmentChange(selectedEquipmentRack.id, selectedEquipment.id, {
+                          managedUser: event.target.value,
+                        })
+                      }
+                      fullWidth
+                    />
+                  </>
+                )}
+              </>
+            )}
             {selectedEquipment.type === 'pdu' && (
               <>
                 <Divider />
diff --git a/src/types.ts b/src/types.ts
index 9cf4fb1..728ed09 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -69,6 +69,10 @@ export interface Equipment {
   patchPanelPorts: number;
   patchPanelPortMap: PatchPanelPort[];
   networkPorts: NetworkPort[];
+  managed: boolean;
+  managedHostname: string;
+  managedUrl: string;
+  managedUser: string;
   pduMount: PduMount;
   pduSide: PduSide;
   pduInputVoltage: string;
diff --git a/src/utils/model.ts b/src/utils/model.ts
index e0b1c6b..e0612cf 100644
--- a/src/utils/model.ts
+++ b/src/utils/model.ts
@@ -57,6 +57,10 @@ export const createEquipment = (type: string, rack: RackContainer, preferredU: n
     patchPanelPorts: libraryItem.type === 'patch-panel' ? 24 : 0,
     patchPanelPortMap: [],
     networkPorts: [],
+    managed: false,
+    managedHostname: '',
+    managedUrl: '',
+    managedUser: '',
     pduMount: 'horizontal',
     pduSide: 'right',
     pduInputVoltage: '',
@@ -186,6 +190,10 @@ export const normalizeDiagram = (value: unknown): DiagramData => {
               patchPanelPorts: clampNumber(item.patchPanelPorts, 0, 10000, libraryItem.type === 'patch-panel' ? 24 : 0),
               patchPanelPortMap: normalizePatchPanelPorts(legacyItem.patchPanelPortMap, legacyItem.patchPanelPortIdentification),
               networkPorts: normalizeNetworkPorts(legacyItem.networkPorts ?? legacyItem.switchPorts),
+              managed: Boolean(item.managed),
+              managedHostname: item.managedHostname || '',
+              managedUrl: item.managedUrl || '',
+              managedUser: item.managedUser || '',
               pduMount,
               pduSide: item.pduSide === 'left' ? 'left' : 'right',
               pduInputVoltage: item.pduInputVoltage || '',