USRobotics USR5686G. Modem speed: 56 Kbit/s, Interface: RS-232. Minimum system requirements: Serial Port Phone Line Serial Cable, Compatible operating systems: Server 2011, Windows 7 64 bit, Win 7, Server 2008 64 bit, Server 2008, Vista 64 bit, Vista, Server.... Compliance certificates: CE, Federal Communications Commission (FCC), cUL, Certification: FCC IC UL CUL CE. Weight: 8.64 oz (244.9 g), Depth: 3.75" (95.2 mm), Height: 1.3" (33 mm). Cables included: Phone (RJ-11)

USRobotics USR4522-RMK. Type: Mounting kit, Product color: Cream, Housing material: Metal. Quantity per pack: 1 pc(s), Package width: 20.2" (514 mm), Package depth: 11.2" (285 mm)

USRobotics USR3453C-ACC. Purpose: Modem, Power supply type: Indoor, Input voltage: 100-240 V. Product color: Black. Weight: 11.2 oz (317.5 g)

USRobotics USR5638. Modem speed: 56 Kbit/s, Interface: RJ-11. Supported protocols: V.92, V.90, V.34, V.32bis, V.32. Power supply type: AC. Minimum system requirements: PCI Express slot, Compatible operating systems: Windows Server 2003/Server 2008/XP/Vista/7. Compliance certificates: Federal Communications Commission (FCC), Certification: FCC, IC

USRobotics V.92 Low Profile PCI Modem. Modem type: V.92, V.90, V.34, V.32bis, V.32, V.22bis, V.22, V.23, and V.21, Interface: USB 3.2 Gen 1 (3.1 Gen 1). Minimum system requirements: - PC with Pentium equivalent processor or higher - Available low profile PCI slot - Analog phone...

USRobotics 56K USB Softmodem. Modem speed: 56 Kbit/s, Interface: USB. Fax compatibility: T.31. Compatible operating systems: Windows Server 2011/ Win 7/ Server 2008/ Vista / Server 2003/POSReady/XP - 32 / 64 bit . Compliance certificates: RoHS, CE, Federal Communications Commission (FCC), cUL, Certification: FCC IC UL/CUL CE RoHS. Weight: 1.59 oz (45 g), Depth: 1.18" (30 mm), Height: 0.827" (21 mm)