This section summarizes the basic design features for wireless components, provided either as infrared (IR) adapters or radio frequency (RF) adapters.
Many manufacturers are implementing integrated IR solutions for mobile PCs. Various form-factor and environmental issues limit the adoption of wireless solutions for desktop PCs, including receiver placement in the office environment and methods for limiting conflicting device signals.
Microsoft recommends that manufacturers move their wireless designs to incorporate fast IR solutions as soon as possible. Fast IR transmits and receives data at speeds of 1.152 Megabits per second (Mbps) and 4.0 Mbps. Fast IR includes design implementations that improve usability. However, interoperability issues still must be addressed.
The requirements listed in this section must be met if wireless capabilities are provided in the system.
22. General device requirements
| Required |
These include the standard requirements for a unique Plug and Play device identifier, automated software-only settings for device configuration, standard device drivers and Windows-based installation, and icons for external connectors. For more information see the "Basic PC 97" chapter of this guide.
23. Compliance with "Device Class Power Management Reference Specification" for wireless devices
| Required |
The "Device Class Power Management Reference Specification" for wireless devices provides definitions of the OnNow device power states (D0 – D3) for these devices. The specification also covers device functionality expected in each power state and the possible Wakeup event definitions for the class. Power states D0 and D3 are required. Other states are recommended.
24. Support Wakeup Events defined in "Device Class Power Management Reference Specification"
| Optional |
For PC 97, the ability to cause a Wakeup event as defined in the "Device Class Power Management Reference Specification" for wireless devices is an optional feature.