BECKHOFF FC9001-0010 - Manual (Page 17)

Installation
If you have installed the Beckhoff TwinCAT automation software before installing the Beckhoff Ethernet
card, the Add New Hardware Wizard will find the TwinCAT driver for real-time Ethernet in the driver
database on the hard disk of your PC.
Operation of the TwinCAT drivers for real-time Ethernet requires no digital signature from Microsoft.
Beckhoff has thoroughly tested this driver in conjunction with the supported hardware and has verified
compatibility with Windows 2000 and XP.
Click Yes to continue with the rest of the installation.
FC90xx 15