Download (direct link):
4. You typically connect a UPS to a PC with a ______ cable.
5. Before removing a PC Card, you should tell Windows XP about your intention via the ______ control panel.
Installing, configuring, and managing Infrared Data Association (IrDA) devices
6. If two infrared devices aren't communicating reliably, consider reducing the ______ setting.
7. Most infrared devices need to be within ______ of each other in order to communicate.
Installing, configuring, and managing wireless devices
8. If you want to use a wireless device to connect a computer to a network, use the ______ control panel.
Manage, monitor, and optimize system performance for mobile users
9. Portable computers typically have two hardware profiles, ______ and ______.
10. To create a new hardware profile, use the ______ control panel's Hardware tab.
1. Hibernate. Didn't know this one? See 'Power Management.'
2. ACPI. See the 'ACPI' section for more information.
3. Power scheme. The 'Power Management' section explains.
4. Serial. See 'Uninterruptible Power Supplies' for details.
5. Add/Remove Hardware. The 'PC Cards' section includes this and other tips.
6. Maximum connection speed. The 'Infrared and Wireless Devices' section has more.
7. One meter. They also typically need to be pointing at each other. See 'Infrared and Wireless Devices' for details.
8. Network and Dial-Up Connections. Again, the 'Infrared and Wireless Devices' section elaborates.
9. Docked, undocked. See 'Docking stations' and 'Hardware Profiles' for more.
10. System. The 'Hardware Profiles' section explains.
The basic idea behind power management is that the operating system, in cooperation with the BIOS, can power down your display, hard drive, and certain other components after a predefined period of inactivity. The goal is to save battery juice on your mobile computer, extending your work time - or to reduce the part of your electric bill that's attributable to your desktop computer!
All power management functions in Windows XP Professional appear in the Power Options control panel, whose contents can vary depending on the power-saving features of the specific computer. You typically see four or five tabs on this control panel, as follows:
* Power Schemes (see Figure 9-1) lets you select from a predefined group of schemes for when to turn off your monitor and hard disk, and when (or whether) to put the computer into standby mode. (Standby mode is a low-power mode that preserves memory contents; it's suitable for stretches when you're not using the PC but you expect to resume doing so in a few minutes.) If you enable Hibernate support (see two bullets down), you can also specify how long a period of inactivity must occur before the PC hibernates. You can change an existing scheme and save it under a new name, as I explain in Lab 9-1.
Figure 9-1: You can use predefined power schemes or define your own.
* Alarms lets you specify the threshold battery power and corresponding action for two states: low battery and critical battery.
* Advanced (see Figure 9-2) lets you specify whether the Power Management icon appears in your system tray (the sunken area on the taskbar opposite the Start button, which Microsoft has now taken to calling the notification area). If you chose a standby mode option on the Power Schemes tab, the Advanced tab also lets you specify whether Windows should prompt you for your password when you bring your PC out of standby mode. On most modern portable computers, you also get to choose whether pushing your PC's power switch truly powers it down or instead puts it into standby mode, does nothing at all, or asks the user what to do. Similar options exist for closing the lid.
Figure 9-2: You may not see all these options on any given PC.
* Hibernate lets you turn hibernation on or off via the Enable Hibernate Support check box. Hibernation is different from standby. When your PC hibernates, Windows writes the contents of memory to a disk file and then powers off. When you power back on later, Windows retrieves the contents of memory from the disk file, which is usually a lot quicker than a normal boot process. Your programs and even LAN connections come back to life.
Remember Standby = low power but still on; hibernate = off, but ready to restart fast.
* APM only appears if your PC supports it. See the 'APM' section for details.
* UPS lets you configure a battery backup device (you won't typically see this tab on a laptop). See the 'Uninterruptible Power Supplies' section for details.
You can manually put your computer into hibernation mode by choosing Start?Shut Down and choosing Hibernate in the Shut Down Windows dialog box. If your computer supports hibernation fully, you can also specify when to hibernate automatically with the Power Schemes tab of the Power Options control panel. The same holds true for manually and automatically entering Standby mode. Most portable computers let you choose a Power Options setting to force Standby mode or hibernation mode when you close the computer's lid.