Was it intended that the ring would only be DPS? I opened in another role (tank), but the ring went DPS instead. If intended, o.k. (though if so, why put it in a box?), but it would have been preferable for the player to get to choose role for the item.
Speed Force Ring (same with Legion Flight Ring) follows same stat pattern with an OP item which is it gives every possible stat except toughness. For example: If you compare a regular 283 DPS ring with 283 Speed Force Ring you will notice role specific stat (in this case might & precision) will be same but Speed Force Ring will give more dom resto vit etc.. It applies for all roles. If compared as a tank, regular 283 Tank ring and Speed Force Ring has same Dom Health and defense but other stats will be higher. Basically that is the reason why Speed Force Ring one type and not related to a role.
