Product high qualityPlease noteit is just a Fax Data Model adapter .it is not have voice function and cannot make or receive calls. It can only provide dial-up Internet function for your computer through network cable. In addition, it also has the function of sending and receiving faxes. Note: If you are using a windows 10 system, you need to disable the mandatory signature of the windows10 driver before installing the driver software. After you install the driver software, you can open the windows10 driver to force signature. (If you don't know how to do this, you can search through Google Chrome: How to disable mandatory signature for windows10 driver). Main features: receive faxes, send faxes and dial up to the Internet (speed is only 56K), do not support dialing. Very easy to use USB modem that can send and receive faxes and display incoming call numbers. Users download software on the Internet by themselves. Very stable and supports a lot of software,Full-duplex 56Kbps / data / faxData Mode:Support V.44,V. 42bisand MNP5 data compressionFax Mode capabilities: Group 3, class 1Data mode capabilities: V.92, V.90 56 KbpsError Correction capabilities: V.42, MNP4-2Voice / fax / modem distinctionComes with one CD driver, one USB cable and one Phone/ Line CableSupports Windows 98/ 98SE/ ME/ 2000/ XP/Vista/Win7/Win8 8.1/Win 10Computer fax type 56K MODEM, paperless fax, support XP system comes with FAX fax software (not necessarily support other fax software)The Conexant93010 chip is comprehensive and stable.<br> The fax software can use the system's own or aofax, bitware, winfax, etc. (EastFax software cannot be used), cost-effective. USB modem, using Conexant main chip, support caller ID, is a high-performance all-soft modem. Data protocol: ITU-V. 92, V.90, V.34, V.32bis, V.32, V.22bis, V.22, V.23, V.21, Bell212A, 103 Data error correction: V. 42LAPMandMNP2-4Data compression: V.44, V.42bisandMNP5 Instruction system: EIA / TIA578Class1, compatible with HaysAT instruction setFlow control mode: software (XON / XOFF) or hardware (RTS / CTS) flow controlDialing mode: tone, pulse Protection circuit: fast lightning protection circuit to enhance its anti-lightning functioninstallation method:<br> 1. Connect the modem: Connect the modem to the computer's USB port, and plug the telephone line to the other end of the modem. If you need to connect the telephone, you can connect the external line to the telephone, and then connect a line from the telephone extension port to the modem.<br> 2. Install the driver: Put the driver CD into the CD-ROM drive, the computer prompts to find the new hardware after plugging in the cat-select manual installation-click Browse, select the cx-fu07 + / winxp folder on the CD (win7 system will automatically install the driver normally, no manual required installation). After the driver is installed, open the control panel-there will be a modem named usb data fax voice modem in the telephone modem option.<br> 3. Install the fax software (take the fax software that comes with the system as an example): win7 just need to double-click the FAX printer-tools-fax printer configuration-device in the control panel-printer fax, and allow sending and receiving. , XP system needs to install the fax component first. Package includes 1* 2 Dual RJ11 Ports USB 56K Fax Data Modem