The external USB enclosure may fail predictably when handling large data transfers.
The external USB enclosure may fail predictably when handling large data transfers.
I am experiencing an unusual problem with my External USB Enclosure for 2.5” SSD/HDD SATA drives. Given that it is five years old, I suspect its failure. The setup uses Windows 10, a USB 3.0 interface, and the enclosure is powered via USB port at 5V. When transferring large files—such as 20 to 30GB from PC to the external drive—I notice a significant drop in speed, reaching zero bytes per second after roughly 35 to 40% completion, causing the operation to freeze. The only solution is to disconnect and reconnect the enclosure. I have tested it on different systems, laptops, and SSDs, checking SMART status and other diagnostics, but consistently found the issue to be related to the enclosure itself. After replacing it with a new one, everything functions perfectly, allowing smooth transfers of 50 to 60GB at consistent speeds of 80 to 90 MB/s. The problem seems tied to a specific hardware or software failure that manifests only under large data transfers after a certain point in the process.
Old enclosure:
Functioned properly at high speed until it became too warm/overheated and then a part inside stopped working because of the heat.
Possible cause is expansion-related. It gets hot, fails, then cools down when disconnected.
Reconnect it – it works again until it gets hot again. It keeps cycling...
Just my thoughts...