Ok, I'm confused.
wilfj said: "Gee, RC7100 clearly stated no image
backup to cd/dvd or external hard drive for security reasons. A network or internal H/D is the only allowed method."
And tw33k said: "I just tested it as well and had no option to restore from my external drive"
Are you guys talking about Acronis True Image Home or about Windows 7's built-in backup app? Both are mentioned in this thread, but Acronis TI Home definitely lets me do an image backup to external USB hard drives.