It's an original airport card for the G4 machines (802.11b/g) Standard Bluetooth: 1.1
Which were options at the time of manufacture so you may need a carrier for the card.
'''You may wish to consider using a USB wireless card'''… though finding one that runs on the old OS may be difficult at this time. ''You might have to find a parts machine that has a damaged display or power supply and caniyballize for your card.''
''If this answer is acceptable '''please remember to return and mark it'''.''