HP Compaq Presario,Presario V2000 Hardware And Software Manual page 91

Wireless (Select Models Only)
Computers with 802.11 wireless devices may support 1 or more
of 3 industry standards:
■
802.11b, the first popular standard, supports data rates of up
to 11 Mbps and operates at a frequency of 2.4 GHz.
■
802.11g supports data rates of up to 54 Mbps and operates at
a frequency of 2.4 GHz. An 802.11g WLAN device is
backward compatible with 802.11b devices, so they can
operate on the same network.
■
802.11a supports data rates of up to 54 Mbps and operates at
a frequency of 5 GHz. 802.11a is not compatible with
802.11b and 802.11g.
For information on identifying the type of wireless device in your
computer, refer to
5–4
"Identifying an 802.11 Wireless Device."
Hardware and Software Guide