Cisco Systems AC/DC power supply ADP-30RB.

P/N: 34-0874-01.

Input:  AC 110-240V,  50/60Hz,  1.0A.

Output:  DC +5V, 3.0A;  +12V, 2.0A;  -12V, 0.2A;  Max. 30W.

Fully tested and cleaned, works like new.