Windows 10: Failed to perform - PCI Express 4X to USB 3.1 Gen 2 10 Gbps 2-Port Type C Expansion Card...

Dear Community

Please refer the attachment


I have recently purchased Asmedia chipset based expansion card PCIe x4

https://www.amazon.sg/gp/product/B07X92394W/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1


However, it didnt reach the performance it should be. Less than 20mb/s transfer rate when I use with Sandisk ULtra USB Type C 3.1 Flash Drive
I have yet to try my other new USB 3.1 Gen 2 devices


I wonder if there is any wrong with drivers installed? Any missing file I should have installed?

Asmedia driver installed so far is: ASMedia_xHCI_Host_Controller_Driver_v1.16.43.1


Driver from CD Rom is seem outdated


Hope anyone is able to help


Thanks

Gary





:)

 

Windows 10 and UASP Support for USB 3.0

What motherboard/chipset are you using? As per your expansion card's specs, "the maximum throughput of this card is limited by the bus interface. If used with PCI Express Gen 1.0 enabled computers,
the max throughput is 2.5 Gbps. If used with PCI Express Gen 2.0 enabled computers, the max throughput is 5 Gbps."

 

Why is my USB 3.1 gen 2 adapter (USB C Female to USB A Male) causing bottlenecking?

I recently picked up an SSD and enclosure with a built in USB Cable. CrystalDiskMark shows a >500MB/s read speed and >400MB/s write speed with a direct USB C connection to a USB 3.1 gen 2 port, so all good here.

But I also picked up these adaptors from amazon.co.uk to ensure I could connect the drive to more common USB type A ports. These adapters noted that they could handle the 10Gbit speeds of USB 3.1 gen 2, although they do note that when this is the case the "other side" (Type A side) runs at USB 2 speeds. Out of a lack of options I decided to give them a go nonetheless and the claim is true. But it's not as simple as saying "these must really just be USB 2 adaptors with a blue finish".

When using the adapter to connect the drive to a front panel USB 3.1 gen 1 port connected to the USB 3 motherboard header, the speeds are ~300MB/s and 400MB/s read and write respectively. So the adapter can handle high throughput but just can't when used in gen 1 or 2 ports on the IO panel of the motherboard itself. Maybe this is a motherboard issue...

Edit: Just verified this across 2 Desktop systems:

• Rear Motherboard IO (USB 3.1 gen 1 and gen 2) with adapter: ~40BM/s
  R/W
  
• Rear Motherboard USB C with no adapter ~500MB/s R and ~400MB/s W
  (full speed)
  
• Front panel IO connected to motherboard USB 3 header (gen 1) with
  adapter ~200MB/s R ~400MB/s W
  

What am I missing here? I have found only one adapter available that clearly states it has 10Gbit ports at either end but it's pricey so any alternative suggestions are welcome. Notably, it has a significant rectangle shape at the USB C side, maybe this is part of the explanation...? See below:

 

My new USB 3.0 HOST PCI-Express card will not recognize any devices

The first card I tried was:

Inateck Superspeed 7 Ports PCI-E to USB 3.0 Expansion Card - Interface USB 3.0 5 Port 2 Rear USB 3.0 Port