We completed tracking the final unlabeled power runs in Mezanine rack H1-VDC-C6. The old cable identification was insufficient to determine exactly where the power was being delivered. Last Tuesday we verified ISC R3 & R5 supplies +/- 24v and +/- 18V (VDC-C6 U30 & U26). This week we verified the old SQZ1 has a +/-18V run which is not connected to any chassis at the moment, but is powered on (VDC-C6 U22). The remaming unidentified power runs (VDC-C6 U18, U14, & U10) were identified to supply H1-ISC-R2 +/-18V and H1-ISC R1 +/-24V, +/-18V. Rack document has been updated and placed in the DCC. Mystery solved!