MCK Communications Citel 843+ EXTender 1000 2-Port Switch Module with Cable and Power Adapter E-1000U-SNM.
Input/Output Ports: 2x RJ11, 1x RS232
Power Input: 100-240V 50-60Hz
Power Output: 12V 2A
Color: Black
Height: 1.5"
Width: 8"
Depth: 8"
Type: Switch Module
Features: AC Power Adapter and Straight Phone Cable P/N: 14B1002