Looks like a format issue ... the newest SSDs might not auto-format like the others. My USB drive works with other Samsung SSD, so I'd think not that.
Disk Mgmt does not recognize it exactly, but a label shows as Disk 1 in Disk Mgmt window, I think. Will try format it tonight. As a part of the process it tells me it needs a drive designation, so will name it if possible. Thanks guys, more to come :)
And, yes, I saw that Magician program on Samsung site, but did not download it. If format does not do it, will try that.