64GB USB Flash Drives External Data Storage Slim Thumb Mini Nano Micro Waterproof

Buono per qualità prezzo

Es muy pequeña, pasa desapercivida. Dejó de funcionar al mes, justo después de terminarse la ventana para devolución.

I wanted this for a wallet-sized flash drive. It works fine for what it is, and is authentic and functional, if slow flash (~3MB/s write ~25-30MB/s read). I think this is about as well as one can do if you just want to be carrying a flash chip+minimal USB contacts around. This device enumerates as VID 346D / PID 5678 "USB Disk 2.0" with a generic vendor name field. Write speeds are typical of a device with a small SLC cache and slower underlying MLC storage (~3MB/s overall including occasional bursts to USB 2.0 speeds of 20-25MB/s and slowdowns to ~1MB/s). Read speeds are ~USB2 (28.6MB/s for a full-drive read). The drive is ~of the stated capacity with typical loss to overhead (58.59GiB=61.44GB, received as EXFAT and formatted as NTFS here). Tests with F3probe/F3write/F3read indicate it's all usable. Build quality seems fine for what it is - it's a small chip-on-board type device with the expected level of thermal solution (i.e., virtually none - there is no room for a heatsink given the size). Given the write speeds it doesn't heat up appreciably during operation. It's very slow flash relative to modern devices, but anything USB3+ would probably just throttle anyway in this application. I would prefer a name-brand device but I think this is probably the realistic limit for this type of minimal device and it probably can't be done much better. F3 probe: F3 probe 8.0 Copyright (C) 2010 Digirati Internet LTDA. This is free software; see the source for copying conditions. WARNING: Probing normally takes from a few seconds to 15 minutes, but it can take longer. Please be patient. Good news: The device `/dev/sdb' is the real thing Device geometry: *Usable* size: 58.59 GB (122880000 blocks) Announced size: 58.59 GB (122880000 blocks) Module: 64.00 GB (2^36 Bytes) Approximate cache size: 0.00 Byte (0 blocks), need-reset=no Physical block size: 512.00 Byte (2^9 Bytes) Probe time: 6'40" Operation: total time / count = avg time Read: 498.5ms / 4816 = 103us Write: 6'39" / 4192321 = 95us Reset: 0us / 1 = 0us F3 write: F3 write 8.0 Copyright (C) 2010 Digirati Internet LTDA. This is free software; see the source for copying conditions. Free space: 58.53 GB ... Free space: 0.00 Byte Average writing speed: 3.29 MB/s F3 read: F3 read 8.0 Copyright (C) 2010 Digirati Internet LTDA. This is free software; see the source for copying conditions. ... Data OK: 58.53 GB (122742016 sectors) Data LOST: 0.00 Byte (0 sectors) Corrupted: 0.00 Byte (0 sectors) Slightly changed: 0.00 Byte (0 sectors) Overwritten: 0.00 Byte (0 sectors) Average reading speed: 28.60 MB/s

Good quality

Best product ,capacity 64 ,money is high ,carrying ,functionality