I tried the command, it said "The MCP2221a device is NOT connected".
I exchanged the MID and RIGHT pins, the result is the same.
The power light on MCP2221a is work. The voltages from SDA to GND and SCL to GND are both around 3.3V.
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I tried the command, it said "The MCP2221a device is NOT connected".
I exchanged the MID and RIGHT pins, the result is the same.
The power light on MCP2221a is work. The voltages from SDA to GND and SCL to GND are both around 3.3V.
do you see the MCP221a coming up after connection ? is there sound on plug ?
if not your cable is just a charge, not full USB cable ?
- do you see the MCP221a coming up after connection ? -------> yes, but Win11 said "unknown usb device(device descriper request failed)"
- is there sound on plug ? ---------> yes, a new device displayed, but unknown
- if not your cable is just a charge, not full USB cable ? -----------> I tried 3 cables, all of them can work at other place with data transfer.
I have tried the following methods:
- install the driver from https://www.microchip.com, still the same.
- change the OS power strategy, still the same.
- update the Win11 Home Version to the latest, still the same.
- hold the AC power charge for my Win11 notebook PC, still the same.
- tried all the USB 2.0/USB 3.0/Type-C ports, all the same.
in that case the MCP2221a is not supported by your WIndows 11.
maybe the MCP2221a is bad, sorry i don't know.
"device descriper request failed" sounds like faulty hardware - the host failed to read the descriptor that contains what device class it is, what video resolutions, pixel formats, it supports (for UVC), etc.
From what I've seen, Windows isn't very precise about USB errors, while Linux is. You could try plugging it into Linux and the run dmesg, and look for messages like, "usb 3-2: device descriptor read/64, error -71". If no error, then check if the HID device is enumerated by lsusb.
USB Device Tree Viewer on Windows might also help.
From what I've seen, Windows isn't very precise about USB errors, while Linux is. You could try plugging it into Linux and the run dmesg, and look for messages like, "usb 3-2: device descriptor read/64, error -71". If no error, then check if the HID device is enumerated by lsusb.
USB Device Tree Viewer on Windows might also help.
some have destroyed many USB dongles with laptop use (two pin AC adapter, no PE)
if you don't connect ground first, you get around 100 volts AC(common-mode voltage) over the SDA/SCL pin, this destroys the chip.
Yes, you are right.
I have changed 4 mcp2221a, the former 3 are all bad......
Now the 8259CL on Sugon I620-g30 worked. Thank you very much.
The core command is 'MCP2221a_iccmax_FF.exe -PXE1601C 60 62'
whitelilis.github.io/sugon_8259cl.png at master · whitelilis/whitelilis.github.io
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a friend destroyed 5 Infineon Dongles with a Laptop using two pin AC Adapter (no PE)
connect the USB device/dongle first before connect to the laptop's usb,
or better connect Laptop shield to PE.
finally managed to find some time. Wasn't as easy as i thought it was. Had to dismantle the whole thing to properly soldier the 3 pin header from under.
Installed proxmox on top and tada (R7920) :
So many thanks
, 1 down 3 to go will try to change my method with having a buddy press down the header for a few sec.
Installed proxmox on top and tada (R7920) :
So many thanks
, 1 down 3 to go will try to change my method with having a buddy press down the header for a few sec.I want to say a huge thank you to the author of this thread and the program for automated firmware modification. I managed to flash my Dell R640. For some reason, it didn't start on the first try, but after fully initializing the iDrac, it worked. I've attached a photo of the process
Attachments
very possible but afaik not done so far. you need to know which VRM controller is used and find a connection to it.
Considering 8175M for Dell PowerEdge M640 node I am buying for it. And I am glad I double checked here
Can anyone confirm M640 does also retain PXE1610C ?
Or even that R640/T640 codes work here also?
That just means maybe I am the first to test it, as soon I got my hands on it
Can anyone confirm M640 does also retain PXE1610C ?
Or even that R640/T640 codes work here also?
Code:
MCP2221a_iccmax_FF.exe -PXE1610C 60
MCP2221a_iccmax_FF.exe -PXE1610C 62
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first try:
MCP2221a_iccmax_FF.exe -scan 10 7Ftells you if supported VRM controllers found, and they're addresses.
most 'C' and 'CL' models are 2S. note you probably can't run them in quad CPU config.
picture of the VRM area will be helpfull, the controller is located near the 5 or 6 chokes/coils near the sockets.
e.g. like here
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one of these. pls closer picture.
you have understand most 'C' 'CL' do not support S4S motherboard ?
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in theory any device can work with more or less risk. you need to write the software, i can not help. some has this at home, other has that device, If you can afford a 7820, an MCP2221a shouldn't be a problem. The original tool costs around $80 USD.