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
USB Type C Female To USB B Male Adapter for Scanner Printer Converter USB C Data Transfer Adapter for MIDI Controller Keyboard
Aliexpress UK
4 Inputs, 4 Outputs MIDI interface (64 MIDI Channels). USB MIDI interface 4 in / 4 out, 64 channels for MIDI Keyboard, Expander, Groove Box, PC and Mac computers. Mode SW: USB and MIDI THRU mode switch button.
eBay
Unnlink USB Printer Cable USB-A 2.0 to USB-B Scanner Cord 1.5 Meters For PC Camera Printer Extension Cable MIDI Controlle Cable
Aliexpress UK
Plug & Play: Effortlessly connect to any MIDI device with our USB MIDI cable—no special drivers required. Compatible with Windows 7/8/10 and Mac OS. Professional 5 Pin USB MIDI Adapter. Why choose our Professional 5 Pin USB MIDI Adapter?.
eBay
NNBILI USB B Male to USB Type C Female Adapter for Scanner Printer Converter USB Transfer for Printer MIDI Controller Keyboard
Aliexpress UK
1 in and 1 out MIDI interface; 16 MIDI input channels & 16 MIDI output channels LED's indicate power on, MIDI in signal and MIDI out signal. Connect the cable marked \"IN\" to the MIDI \"OUT\" socket of a MIDI keyboard (or MIDI device).
eBay
(USB I2S only) outp 12th DDC digital interface external clock input coaxial/EBU I2S wellness RJ45 dsd512
Aliexpress UK
I found the unit to be very versatile and to have excellent sound quality. There's a Lo-Z input for guitar and bass. MIDI in and out on 5-pin DIN. I'm not sure that this thing will work with Mac or iPad any longer, however Roland continue to release Windows drivers for it, right up to Windows 11, so it'll work on a PC desktop/laptop.
eBay
For MIDI Converter Printer Electric Piano Laptop Mobile, USB-A/Mini/Micro/Type-C to USB-B Female Adapter Connectors
Aliexpress UK
1 in + 1 out MIDI interface; 16 MIDI input channels, 16 MIDI output channels. LED's indicate power on MIDI in signal and MIDI out signal. Connector: USB to MIDI. Make music recording by connecting a music keyboard to your computer with the USB MIDI cable with input/output.
eBay
3M USB C To USB B 2.0 Printer Cable Braided Printer Scanner for Epson HP Canon Brother MacBook Pro Samsung MIDI Controlle Cable
Aliexpress UK
Easy to turn your PC into a music studio. Within minutes you'll be able to play songs while they are being recorded on your PC. MIDI adapter cable supports up to sixteen channels in and sixteen channels out | Adapter features LED power, in and out indicator lights.
eBay
Printer USB Cable, Lightning Cable to USB-B 2.0 MIDI for MacBook Pro, Nylon Braided for Yamaha Casio Digital Piano
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
USB C to USB B 2.0 for MIDI Controller Data Transfer Male to Female Type C to B Adapter for HP/Epson/Canon Printer Scanner
Aliexpress UK