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Tips & Notes
• There are two different options of calculating „Mbytes", „Gbytes" and „Tbytes".
For „experienced computer pros" 1kByte is exactly 1,024 Bytes (binary =2^10). 1MByte are
1,024*1,024=1,048,576 bytes (binary =2^20) etc.
For "normal" users 1kByte (1 „kilobyte") is only 1,000 bytes, as e.g. 1 kilometre equals 1,000
metres exactly. So 1 MByte is „only" 1 million bytes, i.e., 1,000,000 bytes.
The hard drive manufacturer himself uses the formula 1,000 Bytes = 1kByte, the
operating system however interprets 1,024 Bytes = 1kByte.
Therefore, the operating system or even programs for managing data carriers can
show different values, depending on the calculation method used.
The hard drive delivered here has the following data:
Computing version 1 (1kByte =1,024 Bytes): Capacity 233,6GByte
Computing version 2 (1kByte =1,000 Bytes): Capacity 250GByte
Minor deviations from these computing (theoretical) values are normal, and they
depend on the hard drive type.
• USB devices are hot swappable, they can be plugged-in and out during operation.
You should, however, take into account that data may be corrupted or Windows may crash
when the connection cable is disconnected while data are being transmitted.
In Windows, an arrow symbol is displayed in the menu bar when a USB device is in operation.
Click on this arrow symbol to „separate" the device, i.e. to terminate data transmission, so
you can disconnect the USB connecting cable without risking the loss of data.
• USB2.0 devices are downward compatible. This means that the external hard drive also
works on conventional „slower" USB1.1 ports – but in this case only with the maximum
USB1.1 speed (in effect approx. max. 1MByte/s). Several MBytes/s are possible with
USB2.0, depending on the USB controller of your computer.
• If the external hard drive is to be connected via a USB hub, it must also support the USB2.0
transfer mode so as to enable maximum speed.
• The hard drive cannot be operated via USB in DOS or Windows NT.
• Transport your external hard drive carefully, do not expose it to heavy mechanical loads,
impacts or hits. For example, use a suitable padded transport case.
• Make regular backups of your important data. Very important data should be stored several
times on different data media and these should be kept at different locations.
• The LED at the front lights up when the external hard drive is switched on (Power LED
function) or it flashes during read/write accesses.
Cleaning
Before cleaning the device, disconnect it from the power supply. The use of a dry, soft, lint-free
cloth is sufficient to clean the product.
Do not use aggressive detergents as this can cause discolouration.
When cleaning, do not press too hard on the surface to avoid scratches.
Dust can easily be removed using a clean, long-haired brush and a vacuum cleaner.
Disposal
Please dispose of the device when it is no longer of use, according to the current
statutory requirements.
Technical Data
Dimensions (L x W x H): ....................... Approx. 140 x 82 x 18mm (not including rubber
Connection: ........................................... USB2.0
Internally integrated hard drive type: ... SATA, 6.35cm/2.5"
Storage capacity: .................................. 250GB
Please observe the Section „Tips & Notes".
supports)
These operating instructions are a publication by Conrad Electronic SE, Klaus-
Conrad-Str. 1, D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in
electronic data processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited.
These operating instructions represent the technical status at the time of printing. Changes in technology and equipment
reserved.
© Copyright 2010 by Conrad Electronic SE.
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