On Wednesday, 5 March 2025 19:54:19 Greenwich Mean Time Frank Steinmetzger wrote: > Am Wed, Mar 05, 2025 at 03:53:51PM +0000 schrieb Peter Humphrey: > > Greetings, > > > > After reading the recent conversation on m.2 SSDs in a USB-3 enclosure, I > > decided to give it a try. I bought a 4TB Samsung 990 PRO NVMe M.2 SSD and > > a > > Ugreen NVMe USB-3 enclosure. I'm pleased with the performance, but when I > > tried running fstrim on it I got a "not supported" error. > > To get confirmation, try to find out what controller chip is used in the > enclosure. I looked at a product search for “Ugreen M.2 USB” and just on the > first page found three different models with three different controller > chips, from Asmedia, JMicron and Realtek. Then you can check the data sheet > whether it supports the necessary functions.
Thank you Frank. I revisited this today and found that the enclosure I bought does not support TRIM, but another one, barely distinguishable, does. I'll return the one I have and replace it with the other. -- Regards, Peter.
