Trim Enabler support
Trim Enabler 3.3 will disable the kext-signing setting automatically for you, by giving a choice when you flip the switch.
By clicking Proceed, your computer will reboot with kext-signing disabled. You can then flip the switch again to enable Trim.
When you flip the switch back to Off, Trim Enabler will ask you if you want to restore the kext-signing setting back to normal.