Cat 1 - voice only, household station cable.
Cat 2 - voice only, high-pair count feeder cable.
Cat 3 - voice or 10baseT data levels, available in 4-pair for workstation cabling or in high-pair count for feeders.
Cat 4 - voice or 10baseT data levels, no longer produced.
Cat 5 - voice or 100baseT data levels, [...]
To show the windows task manager, press CTRL+SHIFT+ESC, this is useful when you need to kill or end some application that went hang
If you prefer a syntax to type on run or for creating a shortcut use START-RUN type TASKMGR and press ENTER
Sometime old application that still using 16 bit coding will freeze windows, search [...]
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I have a sudden error in my windows XP and need some checkfor all driver installed, there is an application for this, to run it simply press START-RUN then type VERIFIER then press ENTER
Choose what you want to do and Do verify the result.
If you need a faster way to access the fonts folder for copying or browsing what fonts you have, just type at START-RUN then typing FONTS and pressing ENTER, buum.. right away to the fonts folder, enjoy