I have recently bought a Passport Ultra. Its primary use is for regular backups of my ‘desktop’ PC, with occasional use on a couple of laptops, also for large data transfers between those devices.
I chose a USB-powered device deliberately for perceived ease-of-use and the ability to move it between different PCs without needing to take the power-supply as well. However the supplied 18-inch cable is insufficient to use it on the rear USB ports of my PC ‘tower’ and still have the Passport in a convenient location for regular plugging/unplugging. If I use the front ports the plug often gets knocked and the Passport has to sit on the floor - not ideal!
My intention was to use the WD-supplied cable for laptop connection and purchase a longer cable to provide a permanent connection from the rear of the ‘tower’ to a handy position for the Passport on my desk. Depending upon availability, the cable length is likely to be either approx 30", 40" or 60". However Knowledge Base Answer ID 197 would seem to suggest that the drive may/will not work with a longer cable? What are peoples’ views/experience on this please?