Here is a list of Dell systems that will support Windows 11.  The 660/660S is NOT on the list.   The problem isn't just the CPU, but drivers for the other devices.  There won't be support/drivers for the hardware. Dell computers tested for upgrade to Windows 11 | Dell US
Hi, Does anyone have any idea if the system consist of TPM 1.2 or 2.0 or even PTT Security as required for the upcoming Windows 11? Can't seem to locate any of them in the BIOS. Thanks!
Windows 11 support for Inspiron 660s