Dell Mobile Adapter Speakerphone – MH3021P, Ports & Connectors: 1 x USB- C multi functional cable that supports data transfer, power delivery and display, 1 x USB-C, 1 x HDMI, 2 x USB-A, 2 x USB-A 3.1 and 1 x USB-C 3.1 that supports data transfer up to 10Gbps, 1 x USB-C that supports power delivery up to 90W, Video Ports: HDMI 2.0 : 4K (3840 x 2160) @ 60Hz (HDR Support), USB-C : 4K (3840 x 2160) @ 60Hz (HDR Support),Speaker Type: Electrodynamic Speaker with Neodymium Magnet, Speaker Frequency Range:200Hz - 20kHz, Microphone coverage: 360 degrees, omni-directional, Microphone Frequency:100Hz – 10kHz, Supported UC Platforms: Optimized for leading UC platforms, Dimensions (Diameter x Height): 119mm x 32mm (4.7inch x 1.25 inch), Weight: 214g (7.5oz), Host Connection: USB-C, Cable Type ; Length: Round coaxial ; 465mm