USB C to Micro USB cable.
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HiFi USB Cable Lightning To USB B OTG Cable for iPhone iPad To Musical Instrument MIDI Digital Piano DAC audio OTG Cable
Aliexpress UK
Micro USB male Host to USB Female OTG Cable Adapter. You need a USB portable device that is versatile, portable and technically sophisticated. In fact, the more you buy, the more money you save! For Samsung Galaxy Android.
eBay
Raspberry Pi Zero W Micro USB To USB OTG Cable Banana Pi Micro USB OTG Cable Converter Adapter for MP3 MP4 Banana Pi M2 Zero
Aliexpress UK
High-Quality USB C TYPE C CABLE with Durable Connectors and Heat-Resistance Aluminum Sheath Ensure the Lasts Longer Than Others. Built to Last, Aluminum Constructed Connectors Make It Distinguished from the Common USB C Type C Cables.
eBay
USB3.2 Extender Cable USB C 10Gbps OTG Cable Flash Drive Extension Cable for PC Keyboard Webcam GamePad Data USB OTG HUB Cord
Aliexpress UK
It is a lightweight and heavy-duty cable made of durable nylon material with a sleek aluminium design finish. The cable provides fast charging capabilities and is compatible with various Apple iPhone models.
eBay
DD ddHiFi TC07S Nyx Series Silver TypeC HiFi Audiophile USB OTG Cable with Litz Silver Plated over LCOFC Shielding (10cm/ 50cm)
Aliexpress UK
Just your standard USB C (Type C) to Micro USB cable.
eBay
USB C to USB 3.0 OTG Adapter Type C OTG Data Cable Thunderbolt 3 to USB Female Adapter OTG Cable for MacBook Pro Xiaomi Mi USB-C
Aliexpress UK
This USB-C OTG adapter converts your USB-C port into a USB 3.0 port, letting you connect external hard drives, flash drives, keyboards, mice, hubs, and other USB peripherals that support USB OTG. USB C OTG Adapter.
eBay
USB-C To USB OTG Adapter Cable USB Type C Male to USB Female Cable Adapter OTG Cable Converter For Xiaomi Samsung MacBook Pro
Aliexpress UK
One end is Type-C, and the other end is a USB connector, which can be used to connect a series of USB devices, most of which can be used to connect card readers and USB: this application no longer transmits through a computer, which is the highlight of OTG applications.
eBay
USB3.0 OTG Cable Adapter USB Male to Type C Female Fast Charging Adapter OTG Data Cable Converter for Samsung MacBook iPhone1615
Aliexpress UK
Micro USB Host OTG Cable Adapter for Samsung Galaxy S4 S3 II III GT i9500 i9300 i9303 Google Nexus 7 Nexus 10 HTC ONE. With this OTG Micro USB host cable adapter you can access most USB Flash Drives, Mouse, Keyboard.
eBay
Lightning to Type-C Cable OTG Cable Adapter HiFi Portable DAC/Headphone Amplifier OTG Audio Adapter for iPhone 12 Pro Max 11 X
Aliexpress UK