I asked this question a while ago but recently realized I had put the wrong model details.
I'm still have the same problem as although I can find the two SATA Data slots I can't find any place on the motherboard to connect a SATA Power Cable. I also don't have an empty PCI slot or i would just plug in a Nvme adaptor and use that to get the additional space I desperately need.
As i seem to be getting nowhere with this is it worth considering just buying a 2tb external NVME SSD to solve my space problem? If so any suggestions on which on to buy will be gratefully received
[Edited the thread to add issue detail]