Per Arsenal page 44:
The Maximum Armor Modification paragraph states each piece of armor or clothing can accept a number of modification rating points equal to 6 or its highest armor rating (B or I) x 1.5.
The example is: Lined Coat (6/4) can take up to 9 rating points of modifications; i.e. Fire Resistance 5, Insulation 3, and Shock Frills but no more (5+3+1=9).
However:
The Armor Suit Capacity (black box) says to apply the listed capacities to items listed in Street Gear chapter of SR4. It divides the items into categories. Fire Resistance R5 (2 capacity), Insulation R3 (1 capacity), and Shock Frills – (1 capacity) are all Armor Modifications.
Only the SR4 full body armor and urban explorer jumpsuit are given capacities in Arsenal. So is "6 or the armor/clothing highest armor rating (B or I) x 1.5" also the capacity limit for armor or clothing that does not have a listed capacity?
The only way it makes sense to me is:
The Lined Coat has 9 capacity. It can hold Fire Resistance 5 [2], Insulation 3 [1], Shock Frills [1], and still has 5 more capacity which can be used for any add-ons other than the Armor Modification entries.
Is this correct? Thanks!