Why is a power cable shown in the images?

The product provides power management for its USB ports, with each group providing 5V3A. The power cable is likely used to supply the necessary power for these ports.

Questions & Answers: GLOTREND U3057 7-Port PCIe USB Expansion Card, 7 USB-A Ports (USB 3.2 Gen 1), Compatible with Windows Linux (Not for Mac OS)

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GLOTREND U3057 7-Port PCIe USB Expansion Card, 7 USB-A Ports (USB 3.2 Gen 1), Compatible with Windows Linux (Not for Mac OS)

This 7-port USB 3.0 expansion card adds 7 Type-A ports to desktops, servers or NAS via a PCI-Express x1 slot. Powered by NEC720201+NEC720210, it is compatible with Intel, AMD and ARM platform, its 7 ports share 5Gbps of PCIe 2.0 X1 bandwidth.
With 2-group power management, each providing 5V3A (Type-A 1-4/Type-A 5-7), it can support 6 x 5V1A devices or 2 x 5V2A high-power ones like industrial cameras, VR systems and USB 3.0 NVME enclosures.
The biggest highlight is the use of high-frequency ceramic capacitors and solid-state capacitors in each USB port to ensure the stability of high-speed data transmission.
Plug and play on Windows 11,10,8 and Server 2012,2012R2,2016,2019,2022 and most Linux kernels. Driver is required for Windows XP,Vista,7 and Server 2003,2008,2008R2. (Note: Mac OS not supported)

$18^.00 –