Be sure: - the SSD is completely blank and un-initialized. - normally initially appears in BIOS first - must use Window's Disk Management to detect, initialize, partition and format drive before use
Maybe try direct connection to on-board SATA port instead of Flex-Bay.
Registered Microsoft Partner and Apple Developer - Like many of you, I can appreciate a good game-engine. - I answer questions here, but I'm not a Dell employee. - Consider giving posts you like a "thumbs-up" - Posting models-numbers and software versions speeds trouble-shooting. - Click "Accept as Solution" button on any post that answers your question best.