How to know what detailed gen is usb-type A of zenbook ux8402ZE?

[FongPoui]

System: WIndows 11
Battery or AC: AC
Model: UX8402ZE
Frequency of occurrence:
Reset OS:
Screenshot or video:
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Detailed description：I bought a 2TB nveme external sandisk extreme pro with claims that the read/write can go until 2000 mp/s. I tried in many way to get that speed and after searching for info on Google, this sandisk model needs a usb 3.2 gen 2. Before buying that, I checked that my zenbook duo 14 pro ux8402ze has that usb 3.2 gen 2. But the speed test is limited only around 1000 mps.
How can I solve this problem?
Ports specification of UX8402
1x USB 3.2 Gen 2 Type-A
2x Thunderbolt™ 4 supports display / power delivery
1x HDMI 2.1 FRL
1x 3.5mm Combo Audio Jack
1x DC-in
Micro SD Express 7.1 card reader

[Falcon_ASUS]

FongPoui

I found connection info of sandisk extreme pro v2 as the above.

My question is how to know if my UX8402ZE USB port is 3.2 Gen 2x2?...

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@FongPoui
I have forwarded the information to the relevant department. We will keep you updated and your consideration will be very much appreciated.

[Falcon_ASUS]

FongPoui

I found connection info of sandisk extreme pro v2 as the above.

My question is how to know if my UX8402ZE USB port is 3.2 Gen 2x2?...

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@FongPoui
Confirmed by the technical unit, the USB port (Type-A) of UX8402ZE is USB 3.2 Gen2 2x1 (10Gbps).
May I confirm with you again? Is this the SSD you bought?
SanDisk Extreme PRO® Portable SSD V2 USB-C, USB 3.2 Gen 2x2 External SSD | Western DigitalThank you.

[FongPoui]

@Falcon_ASUS
"May I confirm with you again? Is this the SSD you bought?"
Yes, that is the one I bought. A 2 TB one.

[Falcon_ASUS]

FongPoui

@Falcon_ASUS

"May I confirm with you again? Is this the SSD you bought?"

Yes, that is the one I bought. A 2 TB one.

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@FongPoui
May I know how you are connected? (Please provide as a photo)

[FongPoui]

Please see how it is connected...