The Targus Universal adapter is preferable to the Xtend model sold by igounited because you just change the tip to select the correct voltage/polarity/geometry for your specific device. Widely available online for about $80. E.g.,
http://www.pagecomputer.com/cgi-bin/...TRG00078&cd=01

However, even in C or F, the Empower ports are often blanked off on 777s.

Edited to fix link.

[This message has been edited by someotherguy (edited 11-21-2001).]