You can operate this modem using HyperTerminal. This modem protects against surge damage.The modem with built-in PCI interface has the function of data transmission (fax is only available for systems above Windows XP) and supports V.92.Fully support PnP function, easy to install.Send and receive faxes no longer have to be afraid of receiving junk fax messages and print them out. As long as the computer is turned on, you can send and receive faxes anytime, anywhere. Communication Protocol Data Protocol ITU-T V.92, V.90, V.34, V.32 bis, V.32, V.22bis, V.22, V.23, V.21, 212A , 103Protection circuit Fast-response semiconductor thunder protection circuit to enhance its anti-thunder functionTransmission rate 56KbpsTransmission protocol V.90/K56flexFax/Protocol V.17, V.29, Group 3, Class 1Voice function Voicemail, automatic replyMain functions Dial-up Internet access, automatically send and receive faxesOperating system Windows 98/2000/xp/vistaCompatibility: Compatible with AT and extended AT command setCommunication Protocol Data Protocol ITU-T V.92, V.90, V.34, V.32 bis, V.32, V.22 bis, V.22, V.23, V.21, 212A , 103Data Error Correction V.42 LAPM and MNP2-4Data compression V.44, V.42 bis and MNP5Command system EIA / TIA 578 Class 1, compatible with Hays AT command setFlow control mode Software (XON/XOFF) or hardware (/) flow controlDial Mode Tone, PulseProtection circuit Fast-response semiconductor thunder protection circuit to enhance its anti-thunder functionConfiguration requirements Celeron300 or Pentium MMX266 or aboveColour: greenMaterial: PCB+metalSize: 18x7x9CMPackage Contents:1 * Main unit1 * Disc1 * Phone CordOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.