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A 20cm USB-A to Micro-USB (Micro-B) cable is a common, short-length accessory typically used for high-speed charging and data synchronization for devices like smartphones, power banks, game controllers, and small electronics.
Based on industry standards for this cable type, here are the technical specifications:
| Feature | Specification |
| Connector A | USB 2.0 Type-A (Male) |
| Connector B | USB 2.0 Micro-B (Male) |
| Cable Length | 20 cm (approx. 8 inches) |
| Interface Standard | USB 2.0 |
| Max Data Transfer Speed | 480 Mbps |
| Power Capacity | Typically 5V / 2A (10W max, though dependent on the host charger) |
| Wire Configuration | 4 wires: 2 for power (Red/Black), 2 for data (Green/White) |
| Typical Material | PVC or TPE jacket; Nickel-plated connectors |
Compact Design: The 20cm length is ideal for "short-reach" connections, such as connecting a smartphone to a power bank inside a pocket or a desk-based controller to a console/PC.
Compatibility: It is widely backward compatible with USB 1.1 standards and works with a vast ecosystem of legacy Android devices, cameras, and portable peripherals.
Sync & Charge: Unlike "charge-only" cables, this standard configuration supports both full data synchronization and power delivery.
Durable Build: Despite the short length, these cables often feature strain relief at the connector ends to prevent internal wire breakage from frequent bending.
If you were to see the interior of this cable, it contains four distinct wires:
Red (VCC): Carries the +5V power.
Black (GND): Acts as the ground wire.
Green & White: Used exclusively for differential data signal transmission.
Note: If you are purchasing this cable for a specific device, ensure your charger output matches the power requirements of the peripheral to maintain efficient charging speeds.
