I've purchased several new USB 3 capable drives to use with my new (USB 3 capable) laptop. They connect ok but I suspect they're silently falling back to USB 2. The sustained transfer rates I'm seeing are around 30 Mb/s for both reads and writes, well within the practical limits of USB 2. One of the drives in particular is rated for transfers well in excess of 100 Mb/s so this is surprisingly (and suspiciously) low.
My question is.. how can I conclusively determine the USB connection speed being used by these devices?
I've poked about in the drive properties and run various diagnostic tools (like SIW). The only information I can extract is that they are indeed connected over USB (duh) but no info on the specific connection speed. The only suggestions I can find online are to benchmark the drives and "if its over 30-40 Mb/s it must be USB 3!" but this seems generally pretty vague and, in my case, inconclusive.
- Laptop is an
Windows Server 2008 R2 Standard
- Reading and writing to the internal SSD (so no bottleneck there)
- USB drives are a
Toshiba Canvio Basic A1 2.5" 1TB USB 3.0 Externaland a
SanDisk CZ80 Extreme 64GB USB3.0 Flash Drive