Add high speed wireless n connectivity to a desktop pc through pci express the pex300wn2x2 pci express wireless n card pcie x1 adds high speed wireless network connectivity to almost any pci express enabled desktopworkstation pc using a 2t2r 2 transmitter2 receiver design over the 24ghz frequency this pcie wireless card provides up to 300mbps of data bandwidth over an 80211n network while improving signal reception and range backward compatible with 80211bg networks 1154mbps