What "original question"? Where?
I have discussed this at length here many times. Assuming you want to use your Lombard for MIDI, the USA-19 will NOT work…period.
You need to restore the mini-DIN serial modem/printer port and connect an external serial-to-MIDI interface.
The model you want is no longer made. You'll have to find in on fleabay or such. Fortunately, they pop up fairly often.
You need the Keyspan USA-28X A…G.
That means it must have the "X" There is also a USA-28 (no "X") that won't work.
The last letter, A thru G is less important. Any one will work.
Do your self a favor and search "Keyspan" and/or "USA-28" here, then absorb everything you read on the subject.