What type of USB lead do I need for the micro:bit? : Help & Support

The micro:bit has a USB type-B micro connector.  You can use the USB interface to load code onto the micro:bit, and to power it.  The USB lead that you require will depend on what device you are plugging the micro:bit in to: Usually

Overview micro:bit

micro:bit accessories and peripherals : Help & Support

Plugable USB 3.1 Type-C to HDMI 2.0 Adapter – Plugable Technologies

GitHub - carlosperate/awesome-microbit: A curated list of BBC micro:bit resources.

USB-C, USB-B, and USB-A: What's the Difference? - ViewSonic Library

Micro USB 3.0 (Type-B) Cable (1-Meter)

Microbit Single Board V2 Kit BBC Micro:Bit Board Built-in Speaker and Microphone Support Machine Learning

USB Types (A, B, C, Micro, Mini) & USB Versions Explained

Cable Matters [USB-IF Certified] 10 Gbps Gen 2 USB C to USB C Cable 3.3 ft / 1m with 8K Video and 100W Power Delivery in Black : Electronics