What are the pluses and the minuses for usb and nic connections for adsl modems?
USB plus: no need for ethernet card. USB minus: USB software drivers may not be as stable as an ethernet/external modem setup. All USB devices need significant CPU power to control, especially when in use. No possibility of insertion of “USB firewall” in between the USB modem and the computer. Harder to try out other operating systems. Newer releases of windows may require a driver upgrade that is not available for a period of time.