Hiya, many thanks for the reply. My number is MD34815. I thought that was the M2 slot, it's just snug against the graphics card. I will keep the other existing M2 card in the other slot for 'Windows' which I don't really want to remove the GPU as not feeling very confident on putting it back on. But I did find a sata 3 power cable that is available to connext to a sata 3 ssd, so may get one of those to fit in the hard disk tray at the top right of the computer. The Samsung 870 evo or Crucial MX500 looks good. Have you any ideas on sata 3 ssd's? Many thanks for the help.
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