Hi, linked!
Welcome to our community!
The differences between the Mic 500 and VPM220 are as follows:
Different terminals that can be connected
The Mic 500 supports the following endpoints: TE20, TE30, Bar 300, DP300, TE40, TE50, TX50, Bar 500, Box 300, Box 600, IdeaHub Enterprise, IdeaHub Pro, IdeaHub S, CloudLink Board, and TE60. , Box 500, Box 700, Box 900
The VPM220 supports the following endpoints: TE30, DP300, TE40, TE50, TX50, and TE60.
The audio protocols supported vary according to the audio channel mode
The Mic 500 supports the following protocols:

The VPM220 supports the following protocols:

Any further questions, let us know!