Old G4 and WiFi card compatibility



I have a G4 (Digital Audio I think) with 10.4, that has a 1.4GHz
processor upgrade and is to be used as a simple internet computer.

Problem is the router/ADLS modem is too far away to run a wire so a PCI
WiFi card is needed.

The local shop has these:
<http://www.planet.com.tw/en/product/product_ov.php?id=30042>

It doesn't say anything about Mac compatibility, will it still work?
.