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-<text x="194" y="959" text-anchor="middle" fill="#333" font-size="9">shf01</text>
+<rect x="58" y="954" width="240" height="6" fill="#bab0ac" stroke="#333"/>
+<rect x="348" y="954" width="240" height="6" fill="#bab0ac" stroke="#333"/>
+<text x="178" y="959" text-anchor="middle" fill="#333" font-size="9">shf01</text>
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-<rect x="74" y="1028" width="12" height="12" fill="#9c755f" stroke="#333"/>
-<text x="90" y="1038">patch-panel</text>
-<rect x="179" y="1028" width="12" height="12" fill="#e15759" stroke="#333"/>
-<text x="195" y="1038">pdu</text>
-<rect x="228" y="1028" width="12" height="12" fill="#4c78a8" stroke="#333"/>
-<text x="244" y="1038">server</text>
-<rect x="298" y="1028" width="12" height="12" fill="#bab0ac" stroke="#333"/>
-<text x="314" y="1038">shelf</text>
-<rect x="361" y="1028" width="12" height="12" fill="#59a14f" stroke="#333"/>
-<text x="377" y="1038">switch</text>
-<rect x="74" y="1046" width="12" height="12" fill="#ffffff" stroke="#333333" stroke-width="1.5"/>
-<text x="90" y="1056">in-use</text>
-<rect x="144" y="1046" width="12" height="12" fill="#ffffff" stroke="#333333" stroke-width="1.5" stroke-dasharray="4 2"/>
-<text x="160" y="1056">staging</text>
-<rect x="221" y="1046" width="12" height="12" fill="#ffffff" stroke="#e15759" stroke-width="3"/>
-<text x="237" y="1056">broken</text>
-<rect x="291" y="1046" width="12" height="12" fill="#ffffff" stroke="#bbbbbb" stroke-width="1.5"/>
-<text x="307" y="1056">spare</text>
+<text x="58" y="1020" font-weight="bold">Legend</text>
+<rect x="58" y="1028" width="12" height="12" fill="#9c755f" stroke="#333"/>
+<text x="74" y="1038">patch-panel</text>
+<rect x="163" y="1028" width="12" height="12" fill="#e15759" stroke="#333"/>
+<text x="179" y="1038">pdu</text>
+<rect x="212" y="1028" width="12" height="12" fill="#4c78a8" stroke="#333"/>
+<text x="228" y="1038">server</text>
+<rect x="282" y="1028" width="12" height="12" fill="#bab0ac" stroke="#333"/>
+<text x="298" y="1038">shelf</text>
+<rect x="345" y="1028" width="12" height="12" fill="#59a14f" stroke="#333"/>
+<text x="361" y="1038">switch</text>
+<rect x="58" y="1046" width="12" height="12" fill="#ffffff" stroke="#333333" stroke-width="1.5"/>
+<text x="74" y="1056">in-use</text>
+<rect x="128" y="1046" width="12" height="12" fill="#ffffff" stroke="#333333" stroke-width="1.5" stroke-dasharray="4 2"/>
+<text x="144" y="1056">staging</text>
+<rect x="205" y="1046" width="12" height="12" fill="#ffffff" stroke="#e15759" stroke-width="3"/>
+<text x="221" y="1056">broken</text>
+<rect x="275" y="1046" width="12" height="12" fill="#ffffff" stroke="#bbbbbb" stroke-width="1.5"/>
+<text x="291" y="1056">spare</text>
 </svg>
 </div>
 
@@ -368,6 +368,7 @@ flowchart LR
 | U5–U6 | [srv04](../../hardware/srv04.md) | server | front | staging |
 | U5–U6 | [srv05](../../hardware/srv05.md) | server | rear | staging |
 | U10 | [sw01](../../hardware/sw01.md) | switch | front | in-use |
+| U11 | [pdu04](../../hardware/pdu04.md) | pdu | front | in-use |
 | U24 | [pp01](../../hardware/pp01.md) | patch-panel | front | in-use |
 | U37–U46 | [shf01](../../hardware/shf01.md) | shelf | both | in-use |
 | U37–U46 | [srv01](../../hardware/srv01.md) | server | front · shf01/1 | staging |
@@ -376,4 +377,3 @@ flowchart LR
 | 0U | [pdu01](../../hardware/pdu01.md) | pdu | left | in-use |
 | 0U | [pdu02](../../hardware/pdu02.md) | pdu | right | in-use |
 | 0U | [pdu03](../../hardware/pdu03.md) | pdu | right | in-use |
-| 0U | [pdu04](../../hardware/pdu04.md) | pdu | left | in-use |