The limit for USB 1.0/1.1 cable length is 3 meters (about 9 feet and 10 inches) and the maximum total length should not exceed 18 meters (about 59 feet).
Does the length of USB cable affect speed?
USB 3.0 and USB 3.1 connection types have the same rating, and it's a bit of an oddball. In theory, there's no actual “maximum.” However, if you go beyond 3 meters (about 10 feet), your signal will start to degrade. The longer you extend the cable, the lower the speed and the less power it will provide.19 nov 2020
Are long USB cables bad?
For charging, longer cables (with the same types of wires) will have more resistance, so they won't deliver the same charging current (or not even enough voltage in an extreme case). For sending data, either it works or it doesn't. You can just try it. Too long could fail because of signal degradation.
How long can USB be extended?
When you tell us 20 feet we will immediately know the issue: the cable is too long. The USB 2.0 specification limits the length of a cable between USB 2.0 devices (full-speed or hi-speed) to 5 meters (or about 16 feet and 5 inches).
How long can a USB 3.0 cable be?
Maximum length of USB active (repeater) cable: If you are not using a regular cable, then the maximum active cable length for USB 2.0 is 30 meters (98 feet and 5 inches) and the maximum recommended length for USB 3.0/3.1 is 18 meters (about 59 feet).
What is the maximum length of a USB?
USB Specification Max. Data Transfer Rate Recommended Cable Length
-------------------- ----------------------- ------------------------
USB 1.0 (Full Speed) 12 Mb/s 3 m (9 ft.)
USB 2.0 (High Speed) 480 Mb/s 5 m (16 ft.)
USB 3.2 Gen 1 5 Gb/s 2-3 m (6-9 ft.)
USB 3.2 Gen 2 10 Gb/s 3 m (9 ft.)
How long can a USB 3.2 cable be?
USB Specification Max. Data Transfer Rate Recommended Cable Length
---------------------------- ----------------------- ------------------------
USB 2.0 (High Speed) 480 Mb/s 5 m (16 ft.)
USB 3.2 Gen 1 5 Gb/s 2-3 m (6-9 ft.)
USB 3.2 Gen 2 10 Gb/s 3 m (9 ft.)
USB 3.2 Gen 2x2 (USB-C only) 20 Gb/s 3 m (9 ft.)
DO USB cables lose quality over distance?
Maximum length of USB 3.0 / USB 3.1 cable: Results may vary, but with a high quality cable you should be able to go beyond 3 meters. However, to ensure you achieve the best results possible, use an active cable when going more than 10 feet (3 meters).
At what length does USB cable matter?
You can use a regular USB cable in conjunction with an active cable as long as the regular cable is not more than 5 meters (16 feet and 5 inches) long for 2.0 devices and not more than 3 meters (9 feet and 10 inches) long for 3.0 devices. Note: Typically, active cables are bus-powered cables.