Belkin F5D9050 - Manual (Page 37)

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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 Wireless 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 Wireless 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 .11b, 802 .11g, G Plus,
G Plus MIMO, and Pre-N?
Currently there are four levels of 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, 802.11b, transmits
information at 11Mbps; 802.11g works at 54Mbps; G Plus, G
Plus MIMO, and Pre-N work at 108Mbps. Pre-N, the precursor
to the upcoming 802.11n release, promises speeds that exceed
802.11g, and up to twice the wireless coverage area. See the
following chart for more detailed information.