Thin Micro USB Cable

Quick Answer: The thin micro USB cable is a flat, lightweight lead with a full-size USB-A plug at one end and a Micro-B plug at the other, pictured in white. A micro USB cable of this kind charges and connects devices with a micro USB socket, such as older phones, power banks and many classroom microcontroller boards.

Micro USB in the Classroom

Micro USB (Micro-B) is the small, flat, tapered connector used on many devices made before USB-C spread. In schools it is still common: the BBC micro:bit, several Arduino-compatible and ESP32 boards, Raspberry Pi Zero boards, power banks, some data loggers and Bluetooth speakers all use it. A spare lead in each coding kit saves a lesson when one goes missing.

The photo shows a flat ribbon-style cable, which tangles less than a round lead and lies neatly in a kit box. Not every thin USB lead carries data; some are made for charging only. If you need the cable to program boards or transfer files, confirm at enquiry that the version supplied is data-capable, together with its length.

Micro-B plugs fit only one way up: the wider side of the plug goes to the wider side of the socket. Forcing a plug in upside down is the usual way sockets on boards get damaged. For more ports on a computer, see the 4-port USB 2.0 hub.

Specifications

Typical Connections

• Programming a BBC micro:bit or a micro USB microcontroller board from a computer
• Charging power banks, older phones and Bluetooth speakers
• Powering a Raspberry Pi Zero or a similar small board
• Downloading data from loggers with a micro USB port

Care & Handling

• Check the plug orientation before inserting, and never force a Micro-B plug.
• Coil the cable loosely; sharp folds at the plug ends are where leads fail.
• Pull by the plug, not the cable.
• Label data-capable leads so they are not mixed up with charge-only ones.

Why Choose LabEquip

Schools running micro:bit and electronics projects buy micro USB leads in quantity, since leads are the part of a kit that goes missing most often. LabEquip lists this cable in General Lab Products; send lengths and quantities on the contact page.

Frequently Asked Questions

What is the difference between micro USB and USB-C?

Micro USB (Micro-B) is a smaller, older connector that fits only one way up. USB-C is oval, reversible and used on most newer devices. The two are not interchangeable without an adapter.

Will this cable program a BBC micro:bit?

The micro:bit uses a micro USB socket, so a data-capable micro USB cable connects it to a computer for programming. A charge-only lead powers the board but will not make it appear as a drive.

How can I tell if a cable carries data?

Connect a device that should appear on the computer, such as a micro:bit or a phone. If it charges but never appears, the lead is probably charge-only.

Why choose a thin flat cable?

Flat leads tangle less, take little space in kit boxes and lie flat on desks. They suit everyday classroom use, though thicker leads generally carry heavy charging currents with less loss.

Can it be used for fast charging?

Micro USB devices charge at modest rates compared with USB-C fast charging, and a thin lead may reduce the current further. For quick phone charging, use the lead that came with the phone.

How do I stop the plug breaking?

Insert and remove it straight, holding the plug body, and avoid bending the lead sharply where it meets the plug. Store it loosely coiled.

Last Updated: September 2026