I'm new here, and just bought a OBD Link EX from Amazon this week.
Plug it into my Desktop unit, running Win 10 and it loaded the USB Serial Port (COM3) just fine.
Plug it into my Dell Notebook running Win10, and I get USB Descriptor Request failed.
I have a Dell Precision 5520 Notebook Workstation with a Xeon CPU.
Tried the following ....
Updated Win10 to latest version
Tried to load a driver from the driver download package CDM-v2.12.28 WHQL certified i386
Updated my USB Serial Bus Controller driver
Tried both USB ports.
On Notebook ...
Downloaded Win10 SDK debug tools, and ran USBView
Supports USB 1.1, 2.0, no 3.0
Is not SuperSpeed or higher capable, no open pipes
Error bLength of 0 incorrect, should be 18
Device enumeration failure
On Desktop ...
[Port1] : USB Serial Converter
Is Port User Connectable: yes
Is Port Debug Capable: no
Companion Port Number: 0
Companion Hub Symbolic Link Name:
USB 1.1: yes
USB 2.0: yes
USB 3.0: no
Device Power State: PowerDeviceD0
English product name: "OBDLink EX"
Current Config Value: 0x01 -> Device Bus Speed: Full (is not SuperSpeed or higher capable)
Device Address: 0x07
Open Pipes: 2
bDeviceClass: 0x00 -> This is an Interface Class Defined Device
bMaxPacketSize0: 0x08 = (8) Bytes
idVendor: 0x0403 = Future Technology Devices International Limited
English (United States) "ScanTool.net LLC"
English (United States) "OBDLink EX"
English (United States) "223010098252"
bEndpointAddress: 0x81 -> Direction: IN - EndpointID: 1
bmAttributes: 0x02 -> Bulk Transfer Type
wMaxPacketSize: 0x0040 = 0x40 bytes
Not frustrated, just disappointed. I don't think it will work on my notebook. Probably send it back today, oh well
Discussion about adapters and connections - usage, problems, solutions
1 post • Page 1 of 1