USB 1.0 and USB 2.0 are similar but USB 2.0 provides for a much faster data transfer rate. The USB 1.0 specification operates at 12Mbit/s and the USB 2.0 specification operates at 480Mbits/s Although a 1.0 device cannot operate at 2.0 speeds, the two are compatible. Connecting a USB 1.0 device to a USB 2.0 port or connecting a USB 2.0 device to a USB 1.0 port are both possible. Any device, port or hub that is a 1.0 standard will reduce the data rate to the 1.0 standard. The USB 2.0 specification was adopted in 2001 and most USB devices now conform to the later standard. Older computers may have USB 1.0 ports fitted but will still operate without problems for most applications.
USB 3.1 (C) can deliver a power output of up to 100 watts (20 volts and 5 amps).
For manufacturers, the cost to implement them on a motherboard is only a couple of cents. If you want to add a USB hub to your computer, they can usually be had for under $20.
The USB 1.0 and USB 2.0 circuitry is different. In a desktop computer, the easiest thing to do is to add a new ports card, containing one or more USB 2.0 ports, plugging it into one of the computer's internal PCI bus sockets. Sometime in 2009, USB 3.0 adapters and devices should come to market. These could operate at speeds up to 10 times the speed supported by USB 2.0.
A USB header is a group of pins, typically on a computer motherboard or expansion card, to which an internal USB cable can be attached to provide extra USB ports. Typically, one header is a group of two USB ports. The most common USB header layout is: 5v, D-, D+, Gnd, NC 5v, D-, D+, Gnd, Key Some may be in reverse order, or completely different, so caution is advised. Manufacturers generally design USB headers on to their motherboards if they have extra USB ports left over from the design of the rear I/O. Instead of terminating these extra USB ports, they can be left as USB headers to be used by some other means. Many computer cases feature "Front USB Ports". These front USB ports connect to the USB headers on the motherboard. This is the most common use for USB headers. Words of Cauton: - There are several varieties of header pin layouts ranging from 4 pin, to 10 pin, The most common ones are 5 pin for single USB header, to 9 pin for dual USB, where pin 9 and 10 are not used. Pin 9 and blank pin 10 are to ensure the plug is inserted correctly. Some 9 pin header plugs have different places where the blank pin is and also a different wiring order. You must have the right wiring order and plug for your device, and to your motherboard, or you may do some serious damage to your PC and/or USB devices. It is wise to always double check the pins and wiring via a PC Tech before buying and installing any internal after market USB device.
Onboard USB are USB ports built into the motherboard.
eg: 10% = .10 5%= .05 13%=.13 20%=.20
20
-10
To convert 10 over 20 into a decimal, you simply divide the numerator (10) by the denominator (20). So, 10 divided by 20 equals 0.5. Therefore, 10 over 20 as a decimal is 0.5.
There are 10mm in a centimetre. Therefore to convert, you divide by 10. 20/10 is 2cm.
By multiplication and so 20 times 10 = 200 square meters
Divide by 1000000. So 20 / 1000000 = 2*10^-5
find it online and there
Example 2/4 + 4/5 convert that to 2/4 = 10/20 4/5 = 16/20 10/20 + 16/20 = 26/ 20, reduce that to 13/10
20 X 10 = 200 mm 1 cm = 10 mm 1 mm = 0.1 cm
No, it requires a 3.0 card. There are a couple of extra wires used in 3.0.
To convert from dB (decibels) to mW (milliwatts), you can use the formula: mW = 10^(dB/10). Simply take the dB value and divide it by 10, then raise 10 to that power to get the mW value. For example, if you have 20 dB, the calculation would be mW = 10^(20/10) = 100 mW.