361 / | HD | ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES |
600 | DF | HOUSING OR MOUNTING ASSEMBLIES WITH DIVERSE ELECTRICAL COMPONENTS {11} |
679 | DF | .~ For electronic systems and devices {15} |
683 | .~.~ Computer related support {3} | |
684 | DF | .~.~.~> Memory unit support {1} |
686 | DF | .~.~.~> Input/output device support |
687 | DF | .~.~.~> With cooling means |