.auto-style1 { font-family: Arial, Helvetica, sans-serif; } .auto-style2 { font-size: 9pt; } *DISCONTINUED* Replaced by Plantronics MDA526 Corded Switcher/Mixer for Digital QD Headsets Plantronics MDA490 QD (MDA400 QD series) is a switch that allows connection to both PC and desk phone and switch easily between softphone and desk phone calls with simple touch of a button. Workers can move quickly from desk to desk with the quick disconnect cable and headset. Bundled together with the Plantronics DA90 processor. Plantronics MDA490 compatible with Plantronics Digital Series 6-Pin QD Headsets. Plantronics MDA400 QD series also supports detailed analytics through Plantronics Manager Pro. Key Features: Compatible Plantronics 6-Pin QD Headsets only. (i.e. HW510D, HW520D, HW710D, HW720D). Not compatible with the traditional Plantronics 4-pin Quick Disonnect headsets. Switch easily between desk phones or softphones calls Easy to use visual In-line call controls Noise and echo cancellation Hi-Fi Stereo compatible HL10 and EHS Compatible - call for compatibility One (1) year warranty