Dialogic D/4PCIUF Combined Media Board. Host interface: PCIe, Output interface: RJ-11. Processor clock speed: 34.8 MHz, Built-in processor: 80C186. Width: 18.75 mm, Depth: 172.5 mm, Height: 96.25 mm. Operating temperature range (T-T): 0 - 50 °C, Storage temperature range (T-T): -20 - 70 °C. Connectivity technology: Wired, Compatible operating systems: Windows, Linux, Power requirements: +12 VDC, 450 mA