Q: Need detail technical data and possibly links for further study.
A: It is not very technical. http://www.webopedia.com/TERM/P/PCMCIA.html You have a PCMCIA card. You can either have a card with a RJ45 jacks that basically a NIC card for ethernet, or a wireless PCMCIA card. If you have a RJ45 jack, you can run DSL or Cable broadband There are also PCMCIA cards for dial up modems, RJ11 Jack. Most new laptops have RJ45 jacks built in. This again is an ethernet Network Interface Card (NIC) or called a network card. I don't know what else to tell you.