I try to backup for Titan ridge pci card
No EEPROM/flash device found.
x299@navaratnams-Mac-Pro ~ % sudo flashrom -p ch341a_spi -r GC-Titan-Ridge-New-NVM-43-1.bin
Password:
flashrom v1.2 on Darwin 19.5.0 (x86_64)
flashrom is free software, get the source code at
https://flashrom.org
Calibrating delay loop... OK.
libusb: info [darwin_claim_interface] no interface found; setting configuration: 1
No EEPROM/flash device found.
Note: flashrom can never write if the flash chip isn't found automatically.
x299@navaratnams-Mac-Pro ~ %