If none of the drives we've selected for this roundup sounds appealing to you (or you already own an extra internal SSD), there's one more option available: SSD enclosures. These are plastic or metal housings into which you can put your own SATA 2.5-inch or M.2 solid-state drive to take with you. Enclosures come in 2.5-inch form factors (into which you would put a 2.5-inch SATA SSD) or M.2 ones. The stick-style M.2 SSD is much smaller and lighter, but know that M.2 drives themselves come in both SATA and PCIe bus flavors. You need to be sure your enclosure supports the bus type of M.2 drive you're putting in it. Also, just because you put a PCIe NVMe drive in an enclosure doesn't mean you should magically expect it to go any faster than a standard external SSD. Any drive placed in an enclosure is still subject to the peak USB speed supported by the enclosure's own electronics and controller, and by the USB protocol supported by the port you plug it into. Though there are exceptions, most enclosures are not as durable or rugged as major-maker portable SSDs are. This can be a drawback for those who take their SSDs into dangerous environments (think wildlife photographers or first responders), so be sure that you know what your drive will be exposed to before you go this route. Your data could be at greater risk for corruption than in an SSD purpose-built to withstand the elements.