download the new version for ios USB Device Tree Viewer 3.8.9

F is for full-speed (12 Mbit/s), which can be USB 1.1 or 2.0. You could also use USB Device Tree Viewer, which is very similar to USBView.exe and you won't have to download the huge WDK to use it.ĮDITED: in the screenshot below, H is for high-speed (480 Mbit/s) so USB 2.0. The SanDisk is getting 170 MB/s reads, 130 MB/s writes and the Toshiba is getting around 110 MB/s.Īnother way to check whether you are using a USB 3.0 connection or not is to use USBView.exe from Windows Driver Kit (WDK) By following these instructions I've been able to coerce the driver installer to run correctly, fixing the issue. In doings so I appear to have missed one or more devices. USB drives are a Toshiba Canvio Basic A1 2.5' 1TB USB 3.0 External and a SanDisk CZ80 Extreme 64GB USB3.0 Flash DriveĮDIT/SOLVED - My root problem here was driver related I'd tried to manually install Intel USB 3.0 eXtensible Host Controller Drivers for Windows 7 on Server 2008 R2 (since no server drivers are available).Reading and writing to the internal SSD (so no bottleneck there).

Laptop is an Asus G75VW running Windows Server 2008 R2 Standard.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. The only information I can extract is that they are indeed connected over USB (duh) but no info on the specific connection speed. I've poked about in the drive properties and run various diagnostic tools (like SIW). how can I conclusively determine the USB connection speed being used by these devices? One of the drives in particular is rated for transfers well in excess of 100 Mb/s so this is surprisingly (and suspiciously) low. 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. They connect ok but I suspect they're silently falling back to USB 2.

I've purchased several new USB 3 capable drives to use with my new (USB 3 capable) laptop.

Download the new version for ios USB Device Tree Viewer 3.8.9