I have a client that has a Dell E5430 lattitude laptop and her wireless card is going bad. I want to upgrade. According to Dell we can purchase a Dell 1540 Wifi card to install which will upgrade from a/b/g to a/b/g/n. I would much rather just purchase an Intel 7260 instead. Any suggestions on compatibility and/or options? Are all MiniPCIe cards the same? The laptop has Win7 so drivers will not be an issue. Any thing special with Dell I need to know, such as some special bios to hardware lockouts where only their stuff works? Sorry never work with Dell. I think they are cheap machines.