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26 Mar 2012  

Windows 7 Professional x64
A question about two different molex connectors on USB 3.0 cards

Hey all,

I have two USB 3.0 PCIe cards, one with a small molex connector, and one with a larger one. The card with the larger Molex connector works with my external WD MyPassport drive without issue, but the smaller connector card can't quite mount with the drive.

I've ensured that both are properly secured in the same slot, and they both use the exact same drivers, but the little card remains stubborn. I'm wondering if it has to do with the smaller connector, which can't power a larger device like a desktop external hard drive.

For a visual reference, I'm attaching pictures of both cards to the thread, with the connector of each card circled. The little card is on the left, and the big card is on the right.

Hopefully someone can shed some light on this and explain what difference, if any, the two different connectors make concerning the cards' performance.

Attached Thumbnails
-little-card.jpg   -large-card.jpg  
My System SpecsSystem Spec