Convert your USB-C connection into USB-B with this converter adapter. USB-C Female to USB-B Right-Angled Male. USB C to USB A 3.0 Coiled Extension Cable | U Shaped Male to Right Angle Male. This largely depends on what you require.
eBay
2.5G USB Ethernet Adapter 2500Mbps USB3.0 Lan Network Card USB C to RJ45 Internet Adapter for Laptop PC Windows Mac OS USB-A/C
Aliexpress UK
(1)The usb interface compotiable usb 2.0 and 3.0 device. High Sensitivity: 16 MIDI input channels and 16 MIDI output channels.
eBay
M-VAVE SMK-25 II MIDI Pad Controller Keyboard USB Mini 25 Key,16 RGB Drum Pads,8 Knobs and Music Production,Software Included
Aliexpress UK
【Easy to use】: Set the music programs MIDI in and MIDI out devices to "USB Audio Device". 【Multipurpose】: USB to MIDI Cable Converter fits for various electric guitar effectors, electronic piano keyboards, and other music devices, providing stable connection.
eBay
M-VAVE SMK-37 PRO MIDI Controller 37-Key Semi-Weighted + 16 Velocity RGB Pads & 8 DAW Knobs USB/Bluetooth Dual Mode Controller
Aliexpress UK
Product interface: TYPE-C interface / MIDI interface. Type C female to USB 2.0 B male data charging adapter. Mini DIN 9Pin Male to 3 x 3.5mm Audio DIN Cable for Audio Receiver,Monitor. Mini DIN 9Pin Male to 6RCA Audio Video Cable for TV,Audio Video Receiver,Monitor.
eBay
M-VAVE SMC-Mixer Wireless MIDI Controller Mixing Console BT Connection USB Controller Mixer for Most Electroacoustic Instruments
Aliexpress UK
16 MIDI input channels and 16 MIDI output channels. LEDs indicate power in, MIDI in the signal and MIDI signal out. Connect the "up" to the MIDI "OUT" jack of a MIDI keyboard. Connect the "OUT" to the MIDI "IN" socket of a MIDI keyboard.
eBay
M-VAVE SMK-25 II 25 Key MIDI Controller Keyboard USB Mini 16 RGB Drum Pads 8 Knobs with Music Production Software Included
Aliexpress UK
MIDI IN: Standard MIDI IN 5-pin input port,with 16 MIDI channels,connected to the MIDI OUT port of a MIDI IN 5-pin device. MIDI OUT: Standard MIDI IN 5-pin output port,with 16 MIDI channels,connected to the MIDI IN port of a MIDI IN 5-pin device.
eBay
M-VAVE SMK-25 II 25-Key USB MIDI Controller with 16 RGB Pads & 8 Knobs, Compact Keyboard for DAWs/Beatmaking/Live Performance
Aliexpress UK
The MIDI OUT port on the MIDI keyboard, the Din IN jack labeled "Out", the MIDI IN port for the sound source, and the LINE OUT / PHONES port for the speakers or headphones connected to the source. Connect to the Midi input device via your computer's USB port for computer composing.
eBay
M-VAVE SMK-37 pro USB MIDI Controller 16 RGB Pads 8 Knobs Software Compatible with Windows Mac iOS Android for Music Production
Aliexpress UK
Take your music to the next level with the LEKATO Wireless MIDI Adapter! Connect your synthesizer, EWI, keytar, digital piano and keyboard to MIDI devices with ultra low latency and precision. Works with OS/iOS and Windows XP.
eBay
For M-VAVE Wireless MIDI Controller Versatile Extensive Connectivity Mixing Plastic Console BT Connection USB Controller
Aliexpress UK