Hello [NAME],   For hardware PERC, such as H740P no longer have TRIM support.  However, software RAID like S150 implementations often do include support for TRIM.
Does the H740p support TRIM? I see that the H730p controller does, but I cannot find anything about the h740p supporting TRIM, but I can't imagine a regression for no longer supporting TRIM on a future generation product
H740p TRIM