will this power a optical drive?

Yes it will, it was designed to power an external optical drive and other USB devices. I used it to transfer data from a storage drive to a new computer. Hope that answered your question.

Questions & Answers: EN-Labs USB 2.0 to 2.5" SATA Adapter Cable for SSD/HDD, Hard Drive Connector 22 Pin 7+15 SATA 1 2 3 to USB 2.0 External Converter 480Mbps Converter w/Reserved USB Power

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EN-Labs USB 2.0 to 2.5" SATA Adapter Cable for SSD/HDD, Hard Drive Connector 22 Pin 7+15 SATA 1 2 3 to USB 2.0 External Converter 480Mbps Converter w/Reserved USB Power

SATA to USB 2.0 Adapter
Supports 2.5" SATA hard drive(HDD)/solid state drive(SSD)
USB 2.0 480Mbps max. data transfer rate
w/ Reserved USB Power

$11^.29 –