Device drivers are the software interfaces that talk directly to the physical system hardware. The PCI\VEN Code can be broken down into parts that relate to the hardware manufacturer, the category of the hardware and the revision of the hardware. The first part, the "PCI\VEN_", is specific to the manufacturer, Intel® has the PCI\VEN code of "PCI\VEN_8086". The "&DEV_" part of the code relates to the hardware, in this case the "DEV_3C00" relates to system hardware, specifically the Sandy Bridge DMI2. If the system device is slow or just seems to be not working, then it is likely that the driver is a generic driver, is not installed correctly or is just broken. For use only with the Intel® Sandy Bridge DMI2 device, an up-to-date list of downloads is shown below.
Download Intel® Windows® System Drivers
Intel® System Hardware PCI\VEN_8086&DEV_3C00 Free Downloads
Intel® System Hardware PCI\VEN_8086&DEV_3C00&SUBSYS_84EF1043 Free Downloads
Asus P9x79 Pro System Drivers Intel® System Card
Asus P9X79 Pro
Asus P9X79 Pro
Intel® System Drivers Hardware Revision REV_07\3&11583659&0&00 PCI\VEN_8086&DEV_3C00&SUBSYS_84EF1043&
Intel® System Hardware PCI\VEN_8086&DEV_3C00&SUBSYS_50001458 Free Downloads
Intel® System Hardware PCI\VEN_8086&DEV_3C00&SUBSYS_18A8103C Free Downloads
Intel® System Hardware PCI\VEN_8086&DEV_3C00&SUBSYS_3C001849 Free Downloads
Intel® System Hardware PCI\VEN_8086&DEV_3C00&SUBSYS_3C008086 Free Downloads
Intel® System Hardware PCI\VEN_8086&DEV_3C00&SUBSYS_102717AA Free Downloads
Intel® System Hardware PCI\VEN_8086&DEV_3C00&SUBSYS_84F01043 Free Downloads
Intel® System Hardware PCI\VEN_8086&DEV_3C00&SUBSYS_158A103C Free Downloads
Intel® System Hardware PCI\VEN_8086&DEV_3C00&SUBSYS_04961028 Free Downloads
Intel® System Hardware PCI\VEN_8086&DEV_3C00&SUBSYS_04971028 Free Downloads
Intel® System Hardware PCI\VEN_8086&DEV_3C00&SUBSYS_158B103C Free Downloads
Intel® System Hardware PCI\VEN_8086&DEV_3C00&SUBSYS_102817AA Free Downloads
Intel® System Hardware PCI\VEN_8086&DEV_3C00&SUBSYS_04951028 Free Downloads