if it's got a MIDI out, then absolutely you can use it as a MIDI controller. if you can use as a USB-MIDI interface, I'd assume there's a USB cable going out of it? In that case plug it in and test it with your recording/ MIDI synth software like cubase, sonar, etc...
If it doesn't work the first time check with configurations to see if it registers as a MIDI in option and if not you may need to buy a MIDI-USB adaptor, they run around 40 bucks. I've got one but don't use it since I got this baby:
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