256GB Flash drive YSUYVP-256GSN from Chinese brand Movespeed. It is advertised as a 1000 MB/s transfer rate. Made from metal. Got both type-C and type-A ports.
Type-C speed
Type-A speed
Power consumption (on type-C)
Write 1TB/s 1.9W
Read 1TB/s : up 1.6W
Iddle: 1W
And that allows it to be used as an iPhone 15 Pro external flash (incl. ProRes video recording directly to the external drive)
The price on Aliexpress was: 42$