Does this need the molex power to function?

No. The power is generated from the motherboard through the audio and USB connectors.

Questions & Answers: EnLabs FP525U22AM PC Case 5.25 inch front panel 2 Ports USB 2.0 USB Hub w/ HD Audio Output & Microphone,2.6ft USB 9pin to 2x USB 2.0 Splitter w/ Stereo Audio Mic

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EnLabs FP525U22AM PC Case 5.25 inch front panel 2 Ports USB 2.0 USB Hub w/ HD Audio Output & Microphone,2.6ft USB 9pin to 2x USB 2.0 Splitter w/ Stereo Audio Mic

5.25 Front-Panel 2 Ports USB 2.0 Hub w/ HD Audio & Mic
Extend 1 x HD Audio output and Mic input to front
USB 2.0 9pin header on motherboard is needed
80cm USB 2.0 9pin adapter cable
Black metal case

$25^.69 –