When it comes to supporting the fastest USB drives available, your computer’s USB 3.0 ports are perfectly adequate…for connecting peripherals that don’t depend on the ultimate USB 3.2 speeds. However, common USB 3.0 ports can be underachievers—at 5Gbps, they can’t support the maximum performance from many storage devices, and may not provide enough power to enable them to operate. You need SuperSpeed USB-C®!

The MAXPower 2-port eSATA 6Gb/s & 2-port USB 3.0 PCIe Controller Card for Mac Pro is fully backward compatible with PCIe 1.0 slots as well as previous generations of SATA 1.5Gb/s and 3Gb/s drives. up to 500MB/s total for x1 PCIe 2.0 slot or 250MB/s total for x1 PCIe 1.0 slot. Dependent upon external enclosure compatibility. Inateck 4 Ports PCI-E to USB 3.0 Express Card Compatible Mac Pro (Early 2008 to 2012 Late Version) KT4004 4.5 out of 5 stars 635. Sonnet Allegro USB 3.0 PCIe 4-Port (Mac and Windows Compatible) 4.5 out of 5 stars 250. 1 offer from $74.22. Sonnet Allegro Pro USB 3.2 Type A PCIe Card (Four SuperSpeed 10Gbps USB Connectors). Inateck 4 Ports PCI-E to USB 3.0 Express Card Compatible Mac Pro (Early 2008 to 2012 Late Version) KT4004. Sonnet Allegro USB-C 4-Port PCIe (USB3C-4PM-E) Inateck 2 Port PCIe USB 3.0 Card with Internal USB 3.0 20-Pin Connector - Expand Another Two USB 3.0 Ports, Compatible Mac Pro, No Additional Power Connection Needed.

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The Allegro™ USB-C PCIe⁽¹⁾ card supports data transfers at up to twice as fast as USB 3.0, and can also deliver 15W of power per port to USB-C bus-powered devices (three times the 4.5W specified in the USB 3.0 spec). Don’t settle for mediocre performance or insufficient power for the fastest SSDs—install an Allegro USB-C card to instantly add two Gen 2 USB 3.2 ports to your system and take full advantage of today’s SSD performance.

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Sonnet specially engineered the Allegro USB-C card to provide 15W of power through each of its ports. The ports communicate with the host that 3A of VBUS current is available, enabling this Sonnet solution to support USB-C bus-powered SSDs and SSD RAID devices that need 15W during demanding write operations.

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Featuring the latest high-performance USB 3.2 Gen 2 controller from ASMedia—the ASM 3142—the Allegro USB-C PCIe card supports concurrent data transfers up to 925 MB/s when connected to a two USB-C Gen 2 NVMe SSD devices! Most other cards limit concurrent transfers to half that, a significant disadvantage when time is of the essence.