====== USB Powering ======
Most [[http://www.ztex.de/usb-fpga-2/|Sereies 2 FPGA Boards]] can be powered via USB. Whether the bus deliver sufficient current depends form the application the memory usage (RAM and controller take about 1W) and the USB specification. 

Whether / how USB powering is supported is listed in the following table
^  FPGA Board  ^ Power source selection ^ comments  ^
|  [[http://www.ztex.de/usb-fpga-2/usb-fpga-2.18.e.html|USB-FPGA Module 2.18]]  |  no  | USB powering not supported  |
|  [[http://www.ztex.de/usb-fpga-2/usb-fpga-2.16.e.html|USB-FPGA Module 2.16]]  |  no  | USB powering not supported  |
|  [[http://www.ztex.de/usb-fpga-2/usb-fpga-2.14.e.html|USB-FPGA Module 2.14]]  |  automatically  | USB 3.0 standard delivers sufficient power for small applications including RAM |
|  [[http://www.ztex.de/usb-fpga-2/usb-fpga-2.13.e.html|USB-FPGA Module 2.13]]  |  by soldering a 0Ω resistor | not recommended because USB 2.0 standard does not guarantee sufficient power |
|  [[http://www.ztex.de/usb-fpga-2/usb-fpga-2.04.e.html|USB-FPGA Module 2.04]]  |  by soldering a 0Ω resistor | not recommended because USB 2.0 standard does not guarantee sufficient power |
|  [[http://www.ztex.de/usb-fpga-2/usb-fpga-2.01.e.html|USB-FPGA Module 2.01]]  |  by jumper  | USB 2.0 usually deliver sufficient power |