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== All the numbers ==
Where do the numbers come from? What does the 254 in IOS254 mean?
:It means the IOS is installed to slot 254. There are 255 IOS "slots", because 255 = 0xFF in Hex (the highest two digit number in Hex). An IOS can be installed to any of these "slots". --[[User:SifJar|SifJar]] 12:44, 1 January 2010 (UTC)