On 12/02/2019 19:25, Biller wrote:

64G USB3 Flash NTFS format.Â* (Solid state Pen drive)

Works in Win 7 Pro.

But on Win XP Home SP3 laptop it says it wants to format it.
This laptop has only USB2 ports.

AFAICR there were some changes to the NTFS file system between XP & W7,
so the safest thing to do would be to format it in the XP system rather
than the W7. However, I'm surprised that XP won't recognise one
formatted in W7, because I'd've thought the changes were to an extent
backward compatible, especially for reading, so maybe something else is
going on.