3rd beat accented by bass drum, no bass hit on 1st beat.

Snare used mainly for rim shots, often to play triplets or "latin" style offbeats or other accents inclding accentuation of the bass drum on the 3rd beat.

Cymbal crashes usually on the 4th beat with snare in support as opposed to more traditional crash on the 1st beat in other 4/4 songs.

Bass Guitar generally also misses the first beat, and as such compliments the unique rhythmic foundation of reggae despite being otherwise more melodic by nature.

The bass hook is a key aspect of reggae.

Chops or "skanks" on guitar or keyboard on beats 2 + 4.