Plug-and-play - USB connectivity to Yealink IP phones, including T41S/T42S/T46S/T48S/T42U/T43U/T46U/T48U/ T53/T53W/T54W/T57W/T58A/VP59 (T41S/T42S/ T46S/T48S should be upgraded to version 82 or higher) HD Voice/Wideband speaker performance Noise-cancelling microphone and passive noise cancellation ActiveProtection technology safeguards users from acoustic injury Integrated LED indicator and warning tone 320° bendable boom arm for easy adjustment without breaking Optional connections for UH34: USB-C, 3.5mm jack
