Last Updated March 31, 2017
eBay/Amazon $5 Specials... - current production runs do not support SYSEX - junk, avoid.
Access Virus TI Polar
Akai MIDI Controllers - mpkk49 - does not support SYSEX transfers.
Alesis io26 Firewire Interface - fails on Mountain Lion
APC40 - does not support SYSEX.
AXIOM Pro series - no SYSEX support.
AXIOM 25 - no SYSEX support.
Behringer BCA2000: unreliable for SysEx transfers.
Behringer BCF2000: unreliable for SysEx transfers.
Behringer BCR2000: unreliable for SysEx transfers.
Cakewalk UM-1G - corrupts SYSEX transfers
CME VX 5
Edirol UM-1 Midi/USB
ESI - Midimate II
ESI - M4U XL
HOSA USB to MIDI adapter.
Focusrite Saffife Pro 14
Focusrite Saffire Pro 24 DSP
Focusrite Pro 24 - does not work in Lion or newer
Focusrite Saffire 40
Focusrite Saffire 56 - corrupts SYSEX
Focusrite Scarlett 2i4
Justin Midi USB
M-Audio Firewire 410 - The 1.9.x series of drivers has bug when sending Sysex data on Snow Leopard ...Driver 1.8.4 does not have this problem but only if you use Leopard.
Thread of the problem shown here
... There is a JUNE 2011 update of the driver (1.10.2) that has been reported to work. We suggest you download and install it.
M-Audio UNO - Version 3 unstable at best, especially on MacBook Pros (avoid if you can).
M-Audio Keystation Pro 88
M-Audio MIDISport 1x1, 2x2 etc. Sometimes they work, sometimes not. The older MIDIMan MIDISport series are superior.
MidiTech MIDILink Mini - corrupts SYSEX
MOTU 828 mkII
NI Kore 1 unstable SysEx transfers (sporadic checksum errors) under MacOS
Novation Remote SL unstable SysEx transfers
Presonus Firestudio - corrupts SYSEX
Presonus FireStudio Mobile
RME Fireface 800 - It either works, or it don't. Once it fails, forget fixing it, it's a driver issue.
Swissonic MIDI-USB 1X1
Tascam US-122: bytes get lost during SysEx transfer
Tascam US-122L: Unknown
Yamaha UX256USB MIDI Cable $5 Specials
Yamaha UX16 - Sysex Time Outs
If you own any of these have got them working problem free with updated driver support, please let me know so I can remove them from here.