Sonnet USB 3.0 Panel Mount Upgrade Cable Kit for original xMac mini Server or RackMac mini with USB 2.0 Cables (Includes 3 cables) - Professional Audio Design, Inc | Professional Audio Design, Inc
Amazon.com: Sonnet Allegro Pro USB 3.2 Type A PCIe Card (Four SuperSpeed 10Gbps USB Connectors)
Solo5G (USB 3 to 5 Gigabit Ethernet Adapter) - Sonnet
Sonnet Tempo Duo USB 3.0 and eSATA PCIe Card TSATA6USB3-E