Recording separate track

hello!! i have the same version of audacity on my laptop and pc…im tryin to use a laptop for band recording .on my pc when i enter in recording i can see 16 channels but on a laptop only 2. im using 8 channel mixer and roland rubix22…at home just rubix cause i dont need more channels…asio is installed on my pc but not on a laptop…is there some upgrade cause pc version has been updated recently??