It looks like the ribbon cable in that kit is indeed the adapter for a 40 pin agb, which is what you have.My gameboy is type nr 03 3-2
Somehow I remember from a video that a guy said gameboy SP cable will NOT Work in gameboy advance :///

This is the kit you need for your Gba. The line you are concerned about is an error. It should read “there are two kinds of cables, 40pin or 32pin...”My gameboy
It writes 03 3-2
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But the description says sth weird..... and the chinese seller says it is originaly pretended to be for SP
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