Buy LiDiVi MIDI to USB Interface MIDI Cable with Input&Output Connecting with Piano Keyboard/Synthesizer Keyboard for Editing&Recording Track Work for PC/Mac for Home Music Studio USB 2.0-6.5Ft, Black Online in Taiwan. B071KLC884
First look: Zendure X6 power bank with built-in USB hub | ZDNet
Basics of USB-MIDI -
Midi Hub
Midi Hub
Raspberry Pi Plays A MIDI Tune Wherever You May Roam | Hackaday
MIDI USB Host mk3 - Kenton Electronics
Bome BomeBox MIDI Hub for Stage and Studio BOM-BX B&H Photo Video