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Most new computers come with at least two USB 2.0 ports. One or more USB 2.0 ports are located on the front of the computer to make it easy for you to connect devices.
Many USB and FireWire devices have built-in ports that allow you to connect additional USB or FireWire devices. Connecting one device to another in a series is known as daisy chaining devices. Daisy chaining is ideal if you do not have enough USB or FireWire ports on your computer to attach all your devices to the computer directly or if you simply want to reduce the number of wires connecting to your computer. A single USB port can support up to 127 daisy-chained devices, while a single FireWire port can support up to 63 daisy-chained devices.
USB and FireWire ports allow you to connect new devices to your computer quickly and easily. When you plug a device into a USB or FireWire port, the computer automatically detects and installs the device.
The speed at which a hard drive finds data is referred to as the average seek time, or average access time. The average seek time is measured in milliseconds (ms). Most hard drives have an average seek time of less than 10 ms. The lower the average seek time, the faster the hard drive can find data.
Each time a computer accesses data on a hard drive, the computer places a copy of the data in the cache. This allows the computer to constantly update the cache so the cache always contains the data most recently retrieved from the hard drive. The amount of cache inside a hard drive is measured in megabytes (MB). Hard drives usually have a cache of 2, 8 or 16 MB.
You should check the amount of free space on your hard drive at least once a month. A computer will operate most efficiently when at least 25 percent of the total hard drive space is free.
You can increase the amount of free space on a hard drive by deleting files you no longer need. Deleting older files, Recycle Bin files and temporary Internet files can free up a lot of hard drive space. You can also use a disk cleanup program to automatically find and remove files that are no longer needed on your computer.
Many USB and FireWire devices have built-in ports that allow you to connect additional USB or FireWire devices. Connecting one device to another in a series is known as daisy chaining devices. Daisy chaining is ideal if you do not have enough USB or FireWire ports on your computer to attach all your devices to the computer directly or if you simply want to reduce the number of wires connecting to your computer. A single USB port can support up to 127 daisy-chained devices, while a single FireWire port can support up to 63 daisy-chained devices.
USB and FireWire ports allow you to connect new devices to your computer quickly and easily. When you plug a device into a USB or FireWire port, the computer automatically detects and installs the device.
The speed at which a hard drive finds data is referred to as the average seek time, or average access time. The average seek time is measured in milliseconds (ms). Most hard drives have an average seek time of less than 10 ms. The lower the average seek time, the faster the hard drive can find data.
Each time a computer accesses data on a hard drive, the computer places a copy of the data in the cache. This allows the computer to constantly update the cache so the cache always contains the data most recently retrieved from the hard drive. The amount of cache inside a hard drive is measured in megabytes (MB). Hard drives usually have a cache of 2, 8 or 16 MB.
You should check the amount of free space on your hard drive at least once a month. A computer will operate most efficiently when at least 25 percent of the total hard drive space is free.
You can increase the amount of free space on a hard drive by deleting files you no longer need. Deleting older files, Recycle Bin files and temporary Internet files can free up a lot of hard drive space. You can also use a disk cleanup program to automatically find and remove files that are no longer needed on your computer.