This product is either discontinued or we cannot get that from suppliers.
Yealink PSU-T46T48GT29G, 2 Amp Power Adapter, Compatible With The T46s T48s T52s T54s/ T5.
Yealink 2 Amp Power Adapter - Compatible With The T46s T48s T52s T54s/ T54w & Fanvil X210 (PSU-T46T48GT29G).