Something about plugging accessories into card slots feels kind of, I don't know, 90s to me. That is, unless the accessory is a 128GB, hardware-encrypted SSD.
As the steady increase of integrated laptop features renders expansion ports like ExpressCard less and less relevant, only their most practical applications survive. This is definitely one of them. In both 64GB and 128GB varieties, the Pretec ExpressCard SSDs offer hardware AES256 encryption, near-flush integration with whatever host machine they're connected to and an additional mini USB connector for non-slotted machines. Pretec hasn't priced the units yet, but I don't expect they'll come cheap. [ExpressCard Info]