We are going to visit friends, and learn how drive left handed . I would like to borrow some SDXC memory cards. We leaving on a 5 week trip to Australia. I am not taking my main laptop as it is too large and very heavy, I am traveling with a a little HP, with a dubious history. I would like to run duplicate memory and have enough to cover the whole trip as insurance for the laptop, I make take a spare hard drive also, but wonder if it would survive in the luggage.. In addition we have not flown since 06, ( we both then had cancer, recovered, and then the recession ) so any air travel tips will be helpful, as far as current electronics on board planes goes. I have never flown with my laptops, last trip I carried 2 250 GB hyper drives, and I mirrored them. Thanks.