A:Answer Hi Radar,
Yes, you can use a 1TB SanDisk Ultra SSD as a replacement drive in your Dell Inspiron 3847. If you want a total of 2TB, you can either install two 1TB SSDs or choose a single 2TB SSD option, which is also available in this product line. Kindly be informed that, we it is always recommended to confirm compatibility with the system or motherboard manufacturer before making your purchase. If you need further assistance with this or any other SanDisk product, kindly reach out to us at: https://support-en.sandisk.com/app/askweb
