On Wednesday 19 February 2025 12:20:33 Greenwich Mean Time Frank Steinmetzger 
wrote:
> Am Tue, Feb 18, 2025 at 02:10:35PM -0500 schrieb Philip Webb:
> > 250218 Frank Steinmetzger wrote:

> One thing I forgot to mention: AFAIK not all such enclosures support TRIM.
> If you want to get one, check the conroller chip and whether it supports
> TRIM. In the USB world, the relevant feature is called UAS/UASP (USB
> Attached SCSI).

I was about to mention this ... as Frank explained not all external drives are 
built equal.  TRIM is necessary if you want the performance of the drive to 
remain high as it gets (re)filled up and not suffer from 'write 
amplification'.  This functionality is provided by the onboard controller and 
has to be supported by the filesystem too.  It used to be the case FAT and 
exFAT did not make use of TRIM, or at least they did not when used with 
MSWindows, but I think these days all(?) filesystems use it.