Microphone model on ReSpeaker 4mic array

Hi

I have a question regarding the Respeaker 4-Mic Array(103030216).

Looking at the product images on the above site, it seems that there are two types of microphones mounted on the Respeaker 4-Mic Array.

The gold-colored microphones appear to be SPU0414HR5H-SB(Knowles). However, I’m unsure about the model number of the black-colored microphones.

Is the model number of the black microphones MSM321A3729H9BP?

Or is it a different microphone from MSM321A3729H9BP?

I would greatly appreciate your immediate response.

BR,

It’s highly likely that the black‑colored microphones are not MSM321A3729H9BP. They are almost certainly the same SPU0414HR5H‑SB microphones used across all four positions, just dressed differently.

@ahsrabrifat
Thank you for your reply.

The appearance of the black-colored microphones closely resembles that of the MSM321A3729H9BP.
May I ask why you believe they are the SPU0414HR5H‑SB microphones?