For most users this will be the 802.11 wireless G standard utilizing an un-secure network (like a coffee shop), WEP, WPA or WPA2 encryption standard. Some may have wireless N networks at home, if that is the case then just keep that in mind when you are looking at what types of network the card supports.First we need to identify what type of networks you will be accessing.
Budget PCMCIA WiFi
A great all purpose wireless card is the Netgear WPN511. For those on a budget you can typically find this card refurbished for $ 12 plus tax and shipping. It’s a great buy, you won’t be disappointed. The WPN511 will suit most regular users with average wireless needs. Sierra Wireless MC5725 PCI-E CDMA WWAN Modem Card Original(Sierra Wireless MC5725 PCI-E CDMA WWAN Modem Card Original)
It will work with 128-bit WEP, 64-bit WEP, 40-bit WEP, WPA-PSK encryption standards. It is compatible with Windows 2000 and up and I can personally verify that is works great with most flavors of Linux (Ubuntu, Fedora, and Slax).
Expensive PCMCIA
For those not on a budget or willing to shell out extra for even more performance and flexibility, then the Super Range Xpress from Ubiquity Networks is the adapter you want. Based on the popular and high performance Atheros 5006 Chipset with an external antenna adapter, this adapter trumps all others for a balance between compatibility and extreme performance. PCI to Expansion 2-Port Serial Card Adapter( )
For the power monger, check out the Ubiquity PCMCIA solution with dual external antenna connectors, the SuperRange Cardbus.
This can be useful for using diversifying antenna design for reception and transmission for very long ranges.