Features:1. Plug and Play. It is suitable for WIN 98 or 2000 or ME or XP or Vista or CE5.0 or 10 or 8.1 or 8 or 7. No need for any external driver.2. For GRIS fax cats can dial the Internet, send and receive faxes, but do not support voice calls.3. The 56k data or fax modem uses USB2.0 Type A with a full speed of 56kb or s.4. Comply with V.92, V.90 and V.42, V.42bis or MNP5 protocol. Meets V.17, V.29, and V.27ter Group 3 fax protocols.5. Support automatic dialing, tone and pulse dialing, automatic answering, automatic fax sending and receiving.6. Support caller ID, automatic format or speed sensing, data or fax or voice call, single profile stored on the host, call forward or backward.7. Up to 56k data download, 48k data upload, and 14.4k fax communication.8. Compatibility: Standard and expanded AT command set compatibility. Provides fast connection and maintenance function on the modem.Specification:Type: Normal Dial-up ModemCategory: External typeInterface Type: USBTelephone Line Connection: RJ11Transmission Rate: 56KbpsBus-powered USB Device: 5VTransmission Protocol: V.90 or K56flexFax or Protocol: V.17, V.29, Group 3, Class 1Voice Function: Voicemail, Auto replyMain Function: Dial the Internet, automatically send and receive faxesOperating System: For Windows 98 or 2000 or XP or 7 or 8 or 10 or vistaCompatibility: Compatible with AT and extended AT command setsPackage List:1 x Modem1 x Disc1 x User Manual1 x Data Cable