yes thats totally diffrent thats for a new key fob
i have a early fob the case is cracked and wanted to use the later style fob case
the case has cost me £6 of ebay to transfer all the bits off my exsiting fob and modify the case
not to buy the complete key and pay to have the transponder coded into my car

so will cost me £7 all in to change my case over to new type and not have to programe the complete key