U.S. Robotics 56K USB Faxmodem which includes V.90 and V.92 ITU standard technologies. USB powered so no external power supply is required. The V.92 standard will allow you to send email and attachments quicker. Features Internet Call Notification (ICN) which lets you screen incoming calls. (Call waiting and ID require service from your lacal phone company). Modem on hold lets you take calls while online without dropping your Internet Connection. RoHS compliant.