Cat2 is not a thing. It goes: Level 1, Level 2, Cat3, Cat 4, Cat 5, Cat 5e, Cat 6, Cat 6a, ...
Level 1 and 2 are not usable anymore on modern systems, Cat3 and 4 only have 2 pairs.
It's at least Cat5, more can't really be said because the part where the Cat is marked is not on that cable.