This is a brand new power supply shipped in bulk packaging. 

These are high quality power supplies made by Cisco. 

100% compatible with Yealink products.

Power input 100-240

Power output 5V 2A

Compatible and tested with following models:

• Yealink T20 T21 T22 T26 T28 T41P T42G T42S T46S T46S T48G T48S and many more Yealink phones.

Please feel free to contact me with any questions. I am an expert in VoIP Phones.

Thank you