- What technical characteristics have motivated your choice?
=> 1 between Noon "IN", 2 MIDI outputs "OUT" (supposedly ...)

- For what purpose?
=> Flying VST software

- What is your config (motherboard / CPU / Ram / Disk ,...)?
=> System: DELL Notebook "Latitude D630"

- Which instruments do you use or the systm? ...
=> Used with a FCB1010 to Berhinger

UTILIZATION

- The drivers are stable?
=> Not (see review overall)

- Are they often put day?
=> No, no doc and more on the site EDIROL

- What software do you use most often?
=> Guitar Rig 3

- Do you ever happen to saturate the MIDI interface and if so, under what circumstances?
=> Only the MIDI In works (see review overall)

OVERALL OPINION

Works fine MIDI In, but not in MIDI OUT with the FCB1010, when using the UM-2EX.
(The FCB1010 works well with my desktop PC with MIDI OUT)

Conclusion:
I UM-2EX works well for what is the Midi IN: dumps can be SYSX the FCB1010 to the PC.
I can not do dumps to SYSX FCB1010 ... what is trsgnant (the FCB1010 starts ds error as I connect the MIDI OUT)
Does the problem have also DTECT when removing the USB cable while the PC is turned on (see Reinstalling the drivers ... Previous review)

So not terrible product and I can therefore only the deprecated.
I put "3", knowing that the use of UM-2EX my setup is limited to 1 / 3 of the use that I would do.