This external USB case enclosure is for 9.5mm height / thickness SATA (Serial ATA) TRAY-LOADING drive ( not for any IDE drive or 12.7mm drive or slot-loading drive ). The USB 2.0 External Enclosure could assemble your original 9.5mm SATA optical drive into an external USB CD/DVD drive, it draw power from USB port and no need extra AC adapter.
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