Quick and actually usable even without an additional power supply

The product image from Amazon true at least not until the middle of May! Better inform the manufacturer:
[...]
The card is normally rectangular and contains the 2 external USB 3.0 ports and one internal USB 3.0 port and an additional SATA power. The scope of supply an additional low-profile slot bracket and a mini-CD with the driver - only a solitary executable file (can also be extracted with 7zip if necessary).
According to information in the installation manual (in English and German): The host adapter works with or without electricity. In my Home Server Aspire easyStore H340 I would have no additional power supply.
After installation I have installed the driver - without any problems and without rebooting (The operating system Windows Home Server is a Windows Server 2003 SP2 kernel).
Then equal a 2.5 "USB 3.0 connected hard drive (1TB Intenso without additional power supply without Y cable) recognized. Easily, the transfer of a 4.5 gigabyte file ran with about 75 megabytes per second.
Carefully I would when connecting a 2nd hard disk - here is possibly the power supply only via the PCI-E bus to the problem: PCI-E 1x delivers max. 10 Watt, a USB 3.0 port must at 5 volts max. Draw 900 mA, with two USB 3.0 ports are already 9 watts, the cables forming resistors and the electronic card will also still be alive ...
So - the map is one of the few that can be used with careful use, even without additional power supply - many other cards on strike without this additional supply of power!