USB Cables
USB cables connect your computers, smartphones, tablets, and peripherals. From the reversible USB-C to micro-USB and classic USB-A, each type serves specific needs: data transfer, fast charging, or connecting printers and external hard drives. Available in USB 2.0, 3.0, and 3.1 standards, they offer speeds from 480 Mbps to 10 Gbps depending on your usage. Learn more
The different types of USB connectors
USB cables come in several connector formats to suit your devices. The USB-A connector, recognizable by its rectangular shape, equips most computers and hubs. The USB-B port, square with beveled corners, is mainly found on printers, scanners, and office equipment. Micro-USB is still present on many accessories and older smartphones. USB-C, the latest generation of connectors, stands out with its reversible design that eliminates plugging errors and supports the most demanding use cases.
USB standards: understanding the versions
The USB 2.0 standard, launched in 2000, offers a theoretical speed of 480 Mbps (about 60 MB/s). It remains suitable for connecting keyboards, mice, office printers, and peripherals that don’t require massive transfers. USB 3.0, introduced in 2008, multiplies performance by 10 with a speed of 5 Gbps (625 MB/s). USB 3.0 ports are generally recognizable by their blue insert and the “SS” logo for SuperSpeed. This standard also improves power management with a power draw of 900 mA versus 500 mA for USB 2.0. USB 3.1 and 3.2 push performance further to 10 Gbps and 20 Gbps respectively.
Applications and practical uses
USB cables cover three main functions: data transfer, device charging, and peripheral connection. To transfer large files from an external hard drive or USB flash drive, choose a USB 3.0 or higher cable, which significantly reduces waiting times. Charging smartphones, tablets, and laptops is now mostly done via USB-C with fast-charging support. USB extension cables let you extend your connections up to 5 meters for USB 2.0 and 3 meters for USB 3.0—handy for office or meeting room setups.
USB-C: the universal standard
The USB-C connector is establishing itself as the universal format for modern devices. Its symmetrical, reversible design simplifies everyday connections. Beyond charging and data transfer, USB-C supports the transmission of audio and video streams, allowing you to connect 4K displays via a single cable. USB-C to USB-C cables equip the latest MacBooks, high-end Android smartphones, and tablets, while USB-C to USB-A cables ensure compatibility with older equipment.
Choosing the right USB cable
Choosing a USB cable depends on three criteria: the connector types on your devices, the USB standard required for your use, and the necessary length. To connect a printer to a PC, a USB-A to USB-B cable in version 2.0 is sufficient. To transfer videos from an external SSD, opt for a USB 3.0 or 3.1 cable. USB adapters solve compatibility issues between different types of ports. Always check your devices’ technical specifications before purchasing to ensure optimal compatibility.
