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Adam Birney / Android Authority
⛄Good morning and welcome to Tuesday’s Daily Authority. It’s currently -8 in Scotland, although strangely, it’s too cold for snow. I love ice!
How long are USB cables?
C. Scott Brown / Android Authority
If you’ve ever wondered how long a USB cable is, now is the time to find out. Our Zak Khan deep dive answers the question.
“The maximum length of a USB cable depends on the version of the USB standard it is designed for and whether it is an active or passive cable. Note the type of connector, such as USB-A or without USB-C, it does not show its power and its maximum length. Here is the maximum length of the passive cable depending on the type of USB designed for them”:
- USB 1.1: 5 meters (16 feet)
- USB 2.0: 5 meters (16 feet)
- USB 3.0: 2-3 meters (6.5 feet — 9 feet, 10 inches)
- USB 3.1: 3 meters (9 feet, 10 inches)
- USB 3.2: 3 meters (9 feet, 10 inches)
- USB 4: 0.8 meters (31 inches)
Don’t forget that the manufacturer says that their phone works with different USB standards, it’s not true. If the phone is lower but claims to meet higher specifications, be careful. It is best to buy from a reputable manufacturer with good reviews.
Why is it so long?
- With active and passive USB cables, other factors play a role as the thickness of the cable’s metal conductors.
- If your USB device also sends HDMI, DisplayPort, Thunderbolt, or other signals, that’s also a concern.
- Because passive cables do not amplify signals, the longer the cable the weaker the transmitted signals.
- This means that if your phone is too long (or long or thin), you will lose more data and the speed will be slower.
- Long cable runs can increase the risk of noise from other devices amplifying data signals.
- Zak explained: “Then there are other issues, especially technical issues like clock jitter, that start to rear their head at higher speeds and data transfer rates.”
- With booster cables — those that contain circuitry to amplify signals — length is less of an issue, because strong signals can travel longer without degradation.
- You’ll pay more for a cable, but they’ll come with their own power supply.
Over the cable length max
You can increase the power cables to a specific level:
- 30 meters (98 feet) for USB 2.0
- For USB 3.0, 3.1. and 3.2, this is about 18 meters (59 feet).
- Powerful USB 4 cables are being introduced but are currently only about 3 meters (9 feet, 10 inches).
- Or you can use a powered USB hub, which plugs into a USB port, and connects your long cables to the hub.
- If this doesn’t work for you, check out some of Zak’s other ideas on the feature.
- For advice on USB-C cables, check out our guide to USB-C and our roundup of the best USB-C cables for charging your devices.
Tuesday thing
The next time you use a public restroom, we make sure you think about this…
- We know that a toilet flushes when it’s being flushed, propagating aerosolized poop, water, and germs into the air.
- Now scientists at the University of Colorado in Boulder have found out.
- The team used continuous and pulsed green lasers and cameras to create a thin beam of green light directed at the hole.
- This paper ignited and revealed an aerosol after a commercial toilet was flushed.
- You can read more about the team’s results in the paper “Commercial toilets produce strong and rapidly spreading aerosol plumes,” published in Scientific Reports.
- The researchers found that the “chaotic jet” could be nearly 5 feet (1.5 meters) high, with a velocity of 6.6 feet (2 meters) per second within eight seconds of being activated. flushing.
- The larger particles (for a study, that’s 5 to 10 micrometers) fall out of the vapor cloud quickly.
- Small pieces can be long in the air or hang on the bathroom walls.
- Ewww.
Hello Tuesday!
Paula Beaton, Copy Editor.
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