File Name: allegro_pro_4_usb_32_gen_2_type-c_pcie_card_qsg.pdf Document Version: QS-USB3C-4PM-E-E-G-091124 File Size: 677 KB Description: This is the English language quick start guide for the Sonnet Allegro Pro 4 USB 3.2 Gen 2 Type-C PCIe Card.
To minimize power usage during sleep, power is removed from PCIe cards. Because of this power-saving specification, a USB 3 PCIe card is unable to maintain USB port power during sleep. In macOS, this result in a storage device disconnect upon wake from sleep. The storage device will automatically remount, but the system reports a disconnect message. Because macOS flushes all caches before sleeping, this disconnect should never result in any loss of data.
These cards are compatible with only Thunderbolt 2 or 3 PCIe expansion chassis; they are not compatible with Thunderbolt 1 PCIe expansion chassis (unless they have been upgraded to Thunderbolt 2).
