Belkin F5D8073 - Manual (Page 38)

Troubleshooting
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Adapter does not perform or connection is unstable when computer
has a second built-in wireless network card (such as a mini PCI or
Intel
®
Centrino
™
).
This condition occurs if your computer has a built-in wireless card
while your Belkin N Wireless ExpressCard Adapter is also active.
This happens because Windows must now handle two active
wireless connections.
You need to disable the built-in wireless card from your computer
under “Network Adapters” in the Device Manager.
Adapter does not perform or connection is slow when computer has a
built-in wired Ethernet card.
This condition occurs if your computer has an active Ethernet card
while your N Wireless ExpressCard Adapter is also active. This
happens because Windows must now handle two active network
connections. You need to disable the Ethernet card from your
computer under “Network Adapters” in the Device Manager.
What’s the difference between 802.11g and draft 802.11n?
Currently there are three commonly used wireless networking
standards, which transmit data at very different maximum speeds.
Each is based on the designation for certifying network standards.
The most common wireless networking standard, 802.11g, can
transmit information up to 54Mbps; 802.11a also supports up to
54Mbps, but in the 5GHz frequency; and 802.11n draft specification
can connect at up to 300Mbps. See the chart on the next page for
more detailed information.