I will be upgrading my Inspiron 1521 PCI-e wifi card from a Dell-1390,two antenna to an Intel 4695 agn which needs three antennas. I have a pair of antennas that I believe are for the standard 2.4Ghz use, they are 75 cm and 98 cm in length and have a flag type antenna that is about 1 and a 1/4 inch square. Will either of these work and if so which lengh would be best? I tried to attached a pic of the type of antennas I have to use but, not sure how to post with pics so I hope it works.