If you don't need a Solid State Drive, you can buy a 1 TB Verbatim 2.5" external drive (250QR to 350QR), open it up carefully, remove the 2.5" internal SATA drive and use it in your laptop. Some other branded external drives may also work, but you have to do your research online to be sure that the internal drive is not more than 9.5mm thick and does not have a hardwired/soldered SATA connection.
If you don't need a Solid State Drive, you can buy a 1 TB Verbatim 2.5" external drive (250QR to 350QR), open it up carefully, remove the 2.5" internal SATA drive and use it in your laptop. Some other branded external drives may also work, but you have to do your research online to be sure that the internal drive is not more than 9.5mm thick and does not have a hardwired/soldered SATA connection.