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  • USB3 JetNano

    hi,
    I tried usb3 loopback on jetson nano dev kit. the usb3 port only show 1.5gbps. I also tried it through a 720202 pcie-usb3.0 bridge module. it seems that it recognize the passmark device but failed to recognize device when starting the test, see below. questions:
    1) why on direct usb3.0 port speed only show 1.5gbps?
    2) can the loopback be use through a bridge module?

    alex@JetNano:~$ cd \Documents/programs
    alex@JetNano:~/Documents/programs$ sudo ./usb3test
    [sudo] password for alex:
    /proc/bus/usb/devices not found - trying /sys
    Found USB3 plug : firmware: 2.5 PMU35QKWHN speed: 5000 at 2:2
    Connecting [Serial: PMU35QKWHN]
    Did not find Passmark USB plug PMU35QKWHN
    Couldn't re-open USB3 plug 0 - PMU35QKWHN
    alex@JetNano:~/Documents/programs$


    Thank you,
    Alex

  • #2

    1) Maybe this speed is all the Jetson nano dev kit is capable of? What was the single threaded CPU load?

    2) We haven't dine any testing with a jetson nano dev kit with a 720202 pcie-usb3.0 bridge module attached to a loopback plug. But the plug certainly works on USB ports on PCIe cards (on Windows based x86 machines).

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