USB to MIDI converter

Hi, I asked before for a portable solution as a midi controller, I have found some interesting ones but unfortunately all of them are USB.



I have the iconnectmidi2+ but unfortunately this model doesn´t seems to support usb keyboards to route the midi through it.



I have found the kenton midi usb host but it is very expensive.



I wonder what can be the best solution to connect a midi usb keyboard such as the Korg microkey to my midi synthesizer.



Thanks for your help!

USB to MIDI converter