Ideal for OEMs who want to develop and provide cheap PSTN access for devices that don't have their PCI or PCIe communication, developers want external device solutions, and even new SOHO users reaching out to Asterisk.
Two FXO ports
Easy to install, no need to open the machine to install into pci/PCIe slot
Support two calls simultaneously
Compact plastic case
Low power consumption, powered by USB port
USB 2.0 compatibility (and USB 1.1)