what is the difference between usb 3 gen 1 and gen 2?
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USB 3.1 Gen 1, originally known as USB 3.0, is capable of 5 Gbps transfer speeds—that's called SuperSpeed. USB 3.1 Gen 2 is capable of 10 Gbps transfer speeds—that's called SuperSpeed+. Technically, it accomplishes this by using 128b/132b encoding in a full-duplex communications mode.
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Check for any labels on your ports that are marked as 1.0, 1.1, 2.0, 3.0, or 3.1. The version number specifies how fast USB devices can transfer files. A USB port with just the USB symbol labeled is typically a USB 2.0 port. If the USB port has “SS” (or “SuperSpeed”) on its label, it's a USB 3.0 port.
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USB 2.0 has 4 connector wires while USB 3.0 has a total of 9 connector wires. USB 2.0 offers a transfer rate of 480 Mbps and USB 3.0 offers speed up to 5 Gbit/s, which is 10 times faster.
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Differences between USB 1.0, 2.0 and 3.0 USB 1.0 and 1.1 ports and cables are color-coded white. USB 1.1 is still the most common type of USB being used today, despite it being the most dated form of USB and is the slowest in data transfer speed. ... USB 2.0 ports and cables are color-coded black.
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A gen 1 Nest has a two part ring in stainless steel, and a gen 3 Nest can have a copper, white or black ring. Another external difference is the size of the display, with the generation 3 Nest having a larger (. 5 inch difference in diameter) touch screen that the previous models.
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Difference #4: Hardware – The 1st Gen of Kevo Smart Lock comes with a plastic interior, whereas the 2nd Gen has an all-metal housing. The all-metal interior of Kevo Gen 2 looks more attractive when compared to plastic. Plus, it adds durability to the Kevo Gen 2 Smart Lock.
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USB 1.1/Full-Speed: 12 Mbps. USB 2.0/Hi-Speed: 480 Mbps. USB 3.0/SuperSpeed: 5 Gbps.
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The main difference is the 3rd Generation has Bluetooth 2.1 + EDR and the 2nd Generation does not. Also the battery for music Playback on 3 Generation is 30 hours max and the 2nd Generation is listed as 36 hours playback time.
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The 1.0 version can only recognize low speed and full speed devices. A 2.0 device identifies itself as a full speed device at first then negotiates with the controller via a series of chirps. Once it is identified as a high speed device by the controller, the connection is reset and high speed signalling is used.
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USB 2.0 vs 3.0: Ports and Cables Standard USB cables follow the same color scheme as well. In the image below, we can see that USB 2.0 connectors are white (or black), while USB 3.0 connectors are blue in color. It is also common to find a "SS" (SuperSpeed) label on USB 3.0 cables.
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What is the difference between USB 2.0 and USB 3.0? ... First the transfer rates: USB 2.0 offers transfer rates of 480 Mbps and USB 3.0 offers transfer rates of 4.8 Gbps - that's 10 times faster. Note that the transfer speeds also depend on the device in use in addition to the bus type and USB ports and cables.
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USB Type-C isn't the same thing as USB 3.1, though. USB Type-C is just a connector shape, and the underlying technology could just be USB 2 or USB 3.0. In fact, Nokia's N1 Android tablet uses a USB Type-C connector, but underneath it's all USB 2.0—not even USB 3.0. However, these technologies are closely related.
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Yes, there is a real difference, it's the data transfer speed. SATA 3 has the potential to double the speed of SATA 2. Like malmental posted, the cables can be used interchangably.
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Actually, it is not difficult to tell their physical difference. The USB 2.0 Connectors is colored white or black inside, while the USB 3.0 is colored blue inside. So if you want to find out whether the USB port on your computer or USB flash drive is 2.0 or 3.0, you can distinguish them by the USB port color inside.
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PCIE 3.0 cards are backwards compatible with the 1.0 and the 2.0 slots, but you won't be able to enjoy the full extent of your new PCIE card. It will be restricted to Gen 1 speed (2.5 Gt/sec) while Gen 3 allows 8 Gt/sec and a better encoding scheme which actually makes it about X4 times faster.
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Thunderbolt 3 will utilize a different connector than Thunderbolt/Thunderbolt 2 (using the physical port of USB C and Display Port 1.3). At 40 Gbps, Thunderbolt 3 doubles its theoretical potential for speed when compared to Thunderbolt 2 (20 Gbps).
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['Difference #1: Philips Hue Gen 2 was introduced in 2015, while Hue Gen 3 came in 2016 (800 vs. 600 lumens).', 'Difference #2: Philips Hue Gen 3 provides more color schemes.', 'Difference #3: Gen 3 allows you to achieve full dimming while Gen 2 only goes up to RF down to 5%']