Key
combination
Description
Fn+F4 Put the computer in standby mode. To return to
normal operation, press the Fn key only,
without pressing a function key.
Notes:
1. This mode is called suspend mode in
Windows NT.
2. In Windows 2000 and Windows XP, this
combination of keys functions as a sleep
button. The setting can be changed so that
pressing it puts the computer into
hibernation mode or even shuts the
computer down.
Fn+F5 Control the power source of the built-in
Bluetooth wireless device. This combination of
the keys functions as a toggle switch of the
power state.
Note: In Windows 98, Windows 2000, or
Windows XP, this combination of keys enables
or disables the built-in wireless networking
features (the IEEE 802.11 standard) and the
Bluetooth wireless features. To use this
function, the following drivers must be installed.
v ThinkPad Power Management driver
v OnScreen Display utility
v Wireless device drivers
Fn+F6 Reserved.
Fn+F7 Switch a display output location
v External monitor (CRT display)
v Computer display and external monitor (LCD
+ CRT display)
v Computer display (LCD)
Note:
For any operating system other than
Windows 2000 or Windows XP, no additional
procedure is needed; just press Fn+F7.
Notes:
1. This function does not work when different
desktop images are displayed on the
computer display and the external monitor
(the Extend desktop function).
2. This function does not work while a DVD
movie or a video clip is playing.
3. For Windows 2000 or Windows XP, a
hotkey application might take over the
switching function.
(continued)
Product overview
ThinkPad T40/T40p, T41/T41p, T42/T42p Series 55
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