Yealink PSU-5V/600MA-DC5.5(1.8M) Power Supply Unit (PSU) for the T19PE2, T21PE2 and the T23G
Applicable model: SIP-T19 E2(B)/SIP-T19P E2(B)/SIP-T21 E2(A)/SIP-T21 E2(B)/SIP-T21P E2(A)/SIP-T21P E2(B)/SIP-T23G/SIP-T23P(A)/SIP-T30/SIP-T30(V1)/SIP-T30(V2)/SIP-T30P/SIP-T30P(V1)/SIP-T30P(V2)/SIP-T31/SIP-T31(V1)/SIP-T31(V2)/SIP-T31G/SIP-T31G(V1)/SIP-T31G(V2)/SIP-T31G(V2)-HAC 2.0/SIP-T31G-HAC 2.0/SIP-T31P/SIP-T31P(V1)/SIP-T31P(V2)/SIP-T31P-HAC 2.0/SIP-T33G/SIP-T33G(V1)/SIP-T33G(V2)/SIP-T33P/SIP-T33P(V1)/SIP-T33P(V2)/SIP-T33P-HAC 2.0/SIP-T40G

Yealink 5V 0.6Amp Power Supply Unit PSU