I want to put a 500GB SSD in a USB3.0 enclosure to use as a 'high speed' volume for my Photos library. I was planning on an OWC Mercury Elite Pro and an Electra 6G SSD, when I noticed their $70 cheaper Neptune drive. I asked their live chat what the differences are between the two SSDs and they told me that the firmware in the Neptune is designed for internal use and is not reliable in an external enclosure. Does that sound right? Surely a drive is completely agnostic to where it's installed. Has anyone got any experience using the Neptune SSD in an external enclosure?