what does manufacturer: 443 mean?
Solution 1:
According to the Lenovo ThinkPad T420s reference at https://linux-hardware.org/ Manufacturer 0443 code refers to Ramaxel, e.g. Ramaxel RMT3170EF68F9W1600 4GB DDR RAM memory, 1600MHz.
According to the Lenovo ThinkPad T420s reference at https://linux-hardware.org/ Manufacturer 0443 code refers to Ramaxel, e.g. Ramaxel RMT3170EF68F9W1600 4GB DDR RAM memory, 1600MHz.