- Apple had a firmware update for these boards. Here's the link to the AirPort updates AirPort downloads. There was also a paid update to give you 802.11n depending on the Airport board. You could also try altering your AP so 802.11a (802.11g) connections are possible. Lets us know what happens - PowerBook G4 Titanium Series.
- IMac is a family of all-in-one Macintosh desktop computers designed and built by Apple Inc. It has been the primary part of Apple's consumer desktop offerings since its debut in August 1998, and has evolved through seven distinct forms. In its original form, the iMac G3 had a gumdrop or egg-shaped look, with a CRT monitor, mainly enclosed by a colored, translucent plastic case, which was.
- If you want to find your phone’s WiFi MAC address (for improved WiFi security), then go to Settings – System – About device – Status. Then scroll down until you see WiFi MAC Address. The address should be a series of Hex numbers and letters.
Key Features
Simple way to add draft 802.11n wireless networking capability to any compatible computer
Wifi For Mac G4 Drivers
Apple Airport Card eMac/iMac/iBook G3/G4 Mac Wireless WiFi 802.11b Adapter Card. $12.28 + $3.61 shipping.
When used with 802.11n network, delivers up to 2.5x the speed and 2x the range of 802.11g network
Works with all AirPort, AirPort Extreme, and AirPort Express base stations and equivalent wireless routers
Wifi For Mac G4 Chromebook
Backward compatible with 802.11b and 802.11g devices
Fast and Secure
I've tried restoring my brand new 3GS to 3.1.3 7 times both in dfu mode and recovery mode (from two different computers with itune 9.1.0.79). Resetting Network 8 times. Tried going to AT&T twice. 
Aria Extreme N PCI includes three antennas (2TX/3RX) to maximize its performance with 802.11n routers that also feature multiple radios and antennas. 802.11n devices utilize MIMO (multiple input, multiple output) technology that enables multiple data streams to be transmitted at the same time, and provides enough bandwidth to allow simultaneous high-speed Internet access, HD video streaming, large file transferring, VoIP telephony, and more! Aria Extreme N supports 802.1X, WEP 64/128, WPA, and WPA2 standards, along with TKIP and AES encryption for secure network configuration, so you can work wirelessly with confidence.
Wifi Adapter For Power Mac G4
Simple Configuration
Wifi Power Mac G4
Install Aria Extreme N PCI into an available PCI or PCI-X slot, screw in the three antennas, power on your system, and then install the software—configuration is completed in a few simple steps. If you haven’t added an 802.11n wireless router to your setup, don’t worry; Aria Extreme N PCI is backward compatible with 802.11g and 802.11b routers and other equipment.