Does it support SATA DVD?

Thank you for your inquiry, Yes, it works with SATA DVD, only for read and write data.

Questions & Answers: PCIe x1 to SATA Expansion Card, 2-Port SATA 3.0 SSD/HDD Adapter, Internal Converter for Desktop PCs, Bootable System Drive Support

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PCIe x1 to SATA Expansion Card, 2-Port SATA 3.0 SSD/HDD Adapter, Internal Converter for Desktop PCs, Bootable System Drive Support

"Expand Storage & Boost Speed", Add two extra SATA III (6 Gbps) ports to your desktop PC, supporting both SSDs and HDDs for ultra-fast data transfers and expanded storage capacity.