Science and Engineering Forum

Do USB 3.0 connections require USB 3.0 cords to reach USB 3.0 speeds? Will any USB cord support any USB 3.0 device? You cannot achieve USB 3.0 speeds without a USB 3.0 cable. However, speed is not the only issue. A USB 2.0 cable will work (at USB 2.0 speeds), for some, but not all, USB 3.0 devices. There are at least three important differences in cable construction between the two standards. Related to Speed:       USB 3.0 cables have nine internal conductors versus four in USB 2.0 cables.       Four of the nine internal conductors match the USB 2.0 configuration (two are for power and two are for signal). Connecting a USB 3.0 device with a USB 2.0 cable uses those conductors and operates like a USB 2.0 device.      The other five are signal conductors which are used for the communication method that provides USB 3.0 super speed. A good general description can be found here: USB 3.0 [Wikipedia] USB 3.0 cables have a limit of three meters versus the USB 2.0 limit of five meters.    

          Look around your house and chances are you that have a least a few devices equipped with Universal Serial Bus (USB) cables. On average,  some 3 billion USB ports are shipped each year , by far the most successful type of peripheral connection. In recent years, though, USB's competition has intensified and it now trails behind the new  Thunderbolt  standard both in speed and ease of use. This is the gap that the latest USB development, USB Type-C,  finalized just earlier this month,  intends to fill. Before you can understand USB Type-C, however, you need to know the difference between USB Type-A and Type-B, and tell between the various versions of the USB standard. Generally, the version refers to the speed and functionality of the USB cable, while the USB Type refers to the physical shape and the wiring of the ports and plugs. For the most part, Type-A ends (left of the coin) of the USB cables remains the same across existing USB versions. Dong Ngo/CNET USB

This post may help for all kind of (hover board) electric scooter fault diagnosis. most of the faulty issues are because of some cables inside are loose or disconnect. It usually caused from the shaking when riding or carelessness of factory. it will be easy to fix by yourself instead of wasting too much time for replacement. the scooter has 3 circuit boards, one big main board and 2 co-board. other light indication: 1 times at once: in part C  2 times at once: haven't seen 3 times at once: motor broken or short 4 times at once: in part H 5 times at once: in part B 6 times at once: battery problem. try to replace a new battery. 7 times at once: battery side co-board problem. try to replace the co-board. 8 times at once: power button side co-board problem. try to replace the co-board. ---------------------------------------------------------------------- how to reset the mini smart scooter (hover board)   resolve the imbalance or lost c

       hoverboard wasn't working right after a couple weeks.  The red lights were flashing, it was beeping, and it wasn't functioning.  This isn't a problem so much as an alert: the sensor systems are not reading out data correctly and need adjusting.  We fixed their problem over the phone in about 2 minutes!  Here is the right advice that addresses the issue. Before anything, it is important to note that when stepping onto the hoverboard, your feet need to be flat (parallel to the Earth).  The hoverboard knows when your feet are too angled and will not activate.  Step onto the hoverboard like a step in a staircase, not like you're pushing the pedals in your car. CALIBRATING THE TWO-WHEEL SMART BALANCE HOVERBOARD SCOOTER If the hoverboard is still squawking, its sensors need a tune-up.  You need to calibrate the device, which takes about 60 seconds.  Follow these steps to resolve the problem. Make sure you do not press down on the foot pads during

http://www.infoworld.com/video/59943/amazon-prime-air-gets-a-new-drone

Why do mobile phones come with non- removable batteries nowadays ? I am afraid it is purely and solely a commercial strategy .  Up to now,  technologies were rapidly changing,  and newest phone generations were vastly better than the previous one. Look behind: screen sizes,  DPIs, android /iOS  features,  touch screens,  electromagnetic radiation limits,  gprs-2g-3g-4g.  All of this  occurred in a decade or so, but it was the first decade of the smartphone Era. Remember when the 4.77MHz IBM pc came out?  Up to now,  users had very good reasons to buy the next phone generation,  and invested  a significant amount of their earnings into it.  Network standards were changing too,  and phones had to be changed to cope with new data protocols, taking significant steps forward in data bandwidth.  However, network providers will hardly  keep increasing  speed as they did in the past,  since the available bandwidth for phone communications is being saturated,  and the demand

What happens when we charge our mobile with 5V 2A rated charger instead of 5V 1A rated charger? Will charging faster damage the battery? You can also go ahead and use a 5V, 4A adapter if you have one. What you call as a 'charger' is basically just a power adapter; the current rating just tells us what the maximum current that it can provide is. The adapter just supplies power, it has no intelligence beyond that. In your gadget, there is a charger IC which controls how the battery gets charged. If that is designed for, say 2A at full charge, then that is all that it will draw from the adapter, irrespective of how high the adapter's current rating is. When you use a 1A adapter and your charger IC is designed to take something higher than that (maybe 1.5A), the max charging rate will get limited to 1A, since that is all that is available. When you shift to the 2A adapter, then the IC can charge the battery at its designed limit of 1.5A. Hence the difference