Great product. Simple installation on windows 7 64 bit. One floor between my modem Linksys router my pc on which I installed the PCI card WMP600N. So with a concrete floor. My card is between 108 and 262 Mbit / s. My old usb adapter sometimes amounted to 108 Mbit / s but also sometimes down 13.5 Mbit / s. So big improvement. I recommend this pci card.