Here's the steps if you want to use AOC-SLG3-2M2 in X11SSL-F by BIOS auto-adjustment:
1. Update BIOS to 2.0c(X11SSLF7.A06) or newer version.
2. Use AOC-SLG3-2M2 in PCIe slot7 only.
3. Set JI2C1 and JI2C2 to 1-2(Enable)
4. Set Slot7 bifurcation to "Auto" in BIOS
5. Save and reboot the motherboard, then check if you can have both of M.2 devices in OS.
If you cannot find two of M.2 devices in OS BIOS auto-adjustment, you can change the setting as below for manual setting.(Keep the BIOS version as 2.0c or newer and use AOC-SLG3-2M2 in slot7)
1. Set JI2C1 and JI2C2 to 2-3(disable)
2. Set Slot7 bifurcation to "x4x4" in BIOS
3. Save and reboot the motherboard, then check if you can have both of M.2 devices in OS.