StarTech.com USB 2.0 Fax Modem - 56K External Hardware Dial Up V.92 Modem/ Dongle/Adapter - Computer/Laptop Fax Modem - USB to Telephone Jack - USB Data Modem - Network Fax/CMR/POS. Modem speed: 56 Kbit/s, Interface: USB 2.0, Chipset: Conexant - CX93010-21Z. Supported data transfer rates: 56 Kbps Down, 36.6 Kbps Up, 14.4 Kbps Fax, Upstream data rate: 0.036 Mbit/s, Downstream data rate: 0.056 Mbit/s. Supported protocols: Modem ITU-T V.92 / V.90, V.34, V.32bis, V.32, V.22bis, V.22, V.23, V.21 Bell 212A, Bell 103 Fax.... Certification: CE, FCC, RoHS, REACH, TAA. Compatible operating systems: - Windows 7, 8, 8.1, 10 - Windows Server 2008 R2, 2012 R2, 2016, 2019 - Mac OS 10.9 to 10.10 -...