Aside from power, what other features does the adapter provide?

The adapter is a PCI Express X1 to Dual Type C Expansion Card that supports USB 3.2 GEN1 with a transfer speed of 5Gbps.

Questions & Answers: FOR PCIE to Dual Type C Expansion Card PCI Express X1 to 2Port TYPE-C USB 3.2 GEN1 5Gbps Convert Card Riser ASM1042 Chip for Desktop

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FOR PCIE to Dual Type C Expansion Card PCI Express X1 to 2Port TYPE-C USB 3.2 GEN1 5Gbps Convert Card Riser ASM1042 Chip for Desktop

FOR PCIE to Dual Type C Expansion Card PCI Express X1 to 2Port TYPE-C USB 3.2 GEN1 5Gbps Convert Card Riser ASM1042 Chip for Desktop