there are loads of possibilities with midi but in it's basic form if you want something more reliable go for http://www.motu.com/products/midi/fastlane_usb
take my advice and don't even bother with Maudio midi sport ,not the best drivers on the planet .
Or another option if your only looking to run 16 midi channels is something like a Philip rees v series http://www.philrees.co.uk/products/thruunit.htm
which are very good ive been running the powered version v10 since 1994 that's how good they are .
When you start actually getting into midi interfaces do your research on drivers for future proofing but for the basic extra port a cheapo will do