Thanks for reaching out to us, I am happy to help!
We do not recommend or support modifying the firmware update settings or binary firmware files for this enclosure, changing these settings could create compatibility or stability problems, and may potentially cause damage to the enclosure or installed NVMe SSD.
The firmware update is provided directly from Realtek and some of the settings details are protected, from my understanding the ASPMDIS setting refers to “Active State Power Management” a mechanism in PCIe for saving power at the expense of response time when the PCIe link is resumed. This is commonly used in low power laptops and UltraBook computers but it is not recommended for higher performance devices, especially storage devices as it can cause delays in reading and writing to the storage device after periods of inactivity. ASPM would be useful for devices that do not need to be always on when in low power states, like WiFi controllers. I would recommend against using Active State Power Management with any storage devices.
Settings with a semi-colon ‘;’ are commented out are not relevant to our implementation of this chipset. For example CUSTOMIZED_LED is likely for setting the color of an RGB LED or different modes for a single-color LED. Some settings with 0x0 are simply stating this is a disable option, like CFEXPRESS appears to be a potential compatibility setting for Compact Flash Express standard, which is not supported in this enclosures.
Please let me know if you have any additional questions regarding the firmware update or if there is anything else I can help with.