Sometimes in Digimon Master Online, you will get some items dropped by wild digimon called "Attribute". Attribute is some kinds of item that can increase your tamer's status by merge it into tamer's equpment. There are many kinds of attribute, and with different rank.
Kind of Attribute : HP Attribute, AP Attribute, DF Attribute, MS Attribute, etc. The HP Attribute will increase your tamer's Max HP, AP Attribute increase your tamer's attack, MS for movement speed, and you will explore the other by see for yourself.
Ranking will differ how many points that the attribute has. For example :
HP Attribute Rank C will increase your Max HP more than HP Attribute Rank B. You will notice that HP Attribute Rank C has 60-80, but HP Attribute Rank B only 40-50. For the lowest rank is Rank A, and the range point goes up at Rank B, or even Rank C the highest rank so far.
"Attribute Item - Jacket", means you can only merge it in your jacket. As well as the other.
Here is some list :
HP Att - Jacket
AP Att - Glove
DF Att - Pants
MS Att - Shoes
DS Att - Accesories
Now, what is the meaning of the range points? As you can see, the red word says "Not Identified (Merger Not Possible)" It means that you need to identify it first to able to merge it, or use it. Visit this page to learn how to identify attribute "How to Use Attribute"