Imac PowerG4 with no Air Port unable to connect to internet via LAN

Using an Ethernet cable connection from the Mac to one of the LAN ports of your home Wi-Fi router is probably the only practical way in a case like this.

Alternatively, you could connect a Wi-Fi range extender with wireless Ethernet bridge capabilities (Edimax EW-7438RPn Mini is just one example) to the Ethernet port of the Mac. This would allow you to use a wireless connection to the Wi-Fi router (without the need for drivers).

A USB Wi-Fi adapter would need appropriate drivers, which are difficult to find for Mac OS X 10.3 Panther.

However, as dialabrain also indicated, the web browsers compatible with Mac OS X 10.3 Panther cannot be expected to handle modern, secure (https) web pages. The few remaining plain http pages (for instance, knubbelmac.de) may still work, though.

If you want to test different web browsers, see the following tip by a brody:

Browsers by Mac operating system - Apple Community

Lesterjet wrote:

Any help would be appreciated otherwise its going to the recycling plant.

Long overdue. Even if you could reach the web, it is unlikely it can handle today's internet.

Thank you for the information. Before you take the computer to recycling, you may want to have a quick look at an online auction site such as eBay (filter sold items). The iMac G4 has a certain market value.

https://everymac.com/systems/apple/imac/index-imac.html

If you can reach the Web, you will probably be locked out of most https sites.

People discovered that the original form of https security was not as secure as they thought, which resulted in a movement to upgrade browsers and Web sites to use more secure implementations. I believe that Safari got the changes for the new type of security in El Capitain (OS X 10.11) or thereabouts. PowerPC-based Macs can't run anything higher than Leopard (Mac OS X 10.5). Leopard came out in August 2009 and the final patch to it was in July 2011 (several years before the introduction of El Capitan).

There have also been many changes other than security ones to Web standards, so if you get a browser up and running on that old machine, count yourself lucky.

At this point, I would consider a PowerPC-based Mac more a computer of historical interest – or a platform to use for running old games – than a platform of choice for general office and Web browsing work.

You're welcome. Good plan. 😎