In this case the fix is adding a resistor: "If your system does not use SERIRQ and BIOS puts SERIRQ in Quiet-Mode, then the weak external pull up resistor is n

In this case the fix is adding a resistor: "If your system does not use SERIRQ and BIOS puts SERIRQ in Quiet-Mode, then the weak external pull up resistor is not required. All other cases must implement an external pull-up resistor, 8.2k to 10k, tied to 3.3V" https://www-ssl.intel.com/content/dam/www/public/us/en/documents/specification-updates/atom-c2000-family-spec-update.pdf https://www-ssl.intel.com/content/dam/www/public/us/en/docum... Depending on the motherboard, those pins may be exposed already. Here's what the fix looks like a Synology unit: https://www.reddit.com/r/synology/comments/609u1l/c2538_clock_fix_confirmed_ds2415/ https://www.reddit.com/r/synology/comments/609u1l/c2538_cloc...