HiRO H50083 V92 56K Internal Low Profile PCI Data Fax Voice Dial Up Internet Modem Windows 8.1 8 7 Vista XP 32-bit 64-bit RoHS Latest V.92 Standard Protocol: ; PCM Upstream - Max. Data Upload up to 48K; MOH - Receive Phone Call During Active Internet Quick Connect - Connect to Your ISP Faster; Fully Compatible With the Latest Windows 7 Operation SystemsRoHS Compaliance; Modem Protocol: ITU-T V.92/K56Flex, ITU-T V.34bis, V.34, V.32bis, V.32, V.22bis, V.22, V.21, V.23 Bell 212A/103, V.80; Fax Compatibility: 14.4 kbps Send / Receive, G3 Compatible; Software Compatibility: AT Command Set Compatible; Error Correction: MNP2-4, V.42 Data Compression: MNP5, V.42bis, & V.44; DTE To Modem Data Rate Max: 115200 bpsData Interface: PCI BUS 2.1; Voice function with Telephone Answering Machine (TAM) Line Interface: RJ-11 Modular Jack, Line & Phone; System Requirement: Pentium II 266 MHz or higher, 1x CD-ROM Drive, 1x Available PCI Slot Supported Operation Systems: 98SE, 2000, Server 2000/2003, XP Home/Professional, XP Professional X64 Edition, Vista 32/64 FAmilies, & Windows 7 32/64 Families