Aah, quite the variety of modules.
The first one is a GM5 USB to MIDI Interface. This board only has 1 pair of MIDI in/out, the jumper can be used to connect a further 4 MIDO io pairs.
Then we have a pair of LPCxpresso boards for the 1st gen LPC1769 STM32 microcontroller. This is a variant of MBcore 32. You dock these to a baseboard and voilà.
Then we have a Microchip dev board that’s not normally a part of the MIDIbox ecosystem.
Followed by a Pic18F452 MBcore8 for older projects like MBsid, MBfm and the like.
Last is an AoutNG - an 8-Channel 12-bit DAC board for analog outputs. This is mainly used for the generation of up to 8 CVs at 1V/oct. These can be unipolar or bipolar. Other scales are available in the MIDIbox software. These can drive analog VCOs, VCFs and such.