With the power of simultaneous Dual B&, you can use two separate wireless networks that will run on either the 2.4 G Hz or 5 G Hz b&, simultaneously. The traditional 2.4 G Hz band can provides more range & is great for everyday web surfing use but it is more susceptible to interference from wireless devices running on the same frequency. Using the TD-W9980's two multi-functional USB (Universal Serial Bus) 2.0 ports, users can share printers, files & media either throughout the network at home with several different computers or even away, using the device's FTP server functions so that you never have to part with your files.