USB 2.0 Vs USB 3.0 Compatibility

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.
     (Note that this is a practical limit.) The cable can be any length as long as it meets all of the electrical requirements in the specification. The three meter limit is based on maximum allowable losses using the largest recommended wire size so that the cable is flexible. Specs Document [Zip File – USB.org]

Related to Power:
     A USB 2.0 cable may not be adequate for a high current USB 3.0 device.
     Some USB 3.0 devices draw more power than USB 2.0 devices. The power conductors in USB 3.0 cables need to be able to carry 900 mA versus 500 mA for USB 2.0 cables.Additional information on USB 3.0 versus 2.0 can be found here: USB 2.0 vs. USB 3.0 [Diffen]

Source:

Comments

Post a Comment

Popular posts from this blog

USB Type-C: One cable to connect them all

Image
          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
Read more

This post may help for all kind of (hover board) electric scooter fault diagnosis.

Image
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
Read more

Xiomi comes up with amazing design withits new concept phone MIX

Image
Chinese technology maker Xiaomi may just have won at, well, smartphone-ing. It’s done. The game is up. It’s over.Amazing fact is that despite the technological battle among the giants like SAMSUNG,APPLE,or even GOOGLE, Xiaomi came up with such an advanced ultimate design with innovation .exactly what are we talking about?  Firstly, the device packs a huge 6.4-inch display, which you would be forgiven for expecting to make this one humongous phone. But it’s not, mainly thanks to its almost bezel-free design. When I say that, it’s hard to actually visualize what I mean, so just check out the photos of this thing and let them work their way into your brain. This thing very, very nearly doesn’t have any bezels to speak of, and that’s momentous.This picture definitely tell you a story doesn't it? In order to do away with bezels, Xiaomi has removed the proximity sensor and earpiece, replacing them with technology that is using something called piezoelectric ceramic acoustic technol
Read more