Works on mine. Interestingly the datasheet (pretty bad for Intel) only states it supports 100G datarates.
Interesting.
I just tested and they work for links between two SX6036 (which I didn't test back then..)
What doesn't work is using them for a 40G link between a switch (SX6036) and a Mellanox ConnectX-4 and ConnectX-5 (tested both), which is what I tested back then.
I can't get them to link (even though the same pair of transceivers + cable worked a minute before for linking two SX6036), I believe this is due to the transceiver programming...
I had the same problem with 40GBase-SR4 / 56GBit transceivers yesterday. They worked fine between two switches, but absolutely refused to link between switch + ConnectX-4 / ConnectX-5.
Tried another pair then... Which worked in opposite to the first one.
Turns out: Second pair is Mellanox coded (OUI is 00:02:c9) although they're Finisar labeled, first pair is Finisar coded (OUI 00:90:65). I reprogrammed the first pair to Mellanox OUI and low and behold: Suddenly they began to link fine!
So, beware:
Newer Mellanox cards (ConnectX-4 / ConnectX-5 and upwards) seem to have a vendor lock for (certain) 40GBit transceivers implemented.
Sadly, the Intel transceivers are locked, means I can't reprogram them. Usually you can just brute force a password (see my thread
https://forums.servethehome.com/index.php?threads/transceiver-password-collection.39458/ for some), but the Intel transceivers only do about 100 passwords per second (usually transceivers do 3000), so it would take ages (more than one year in worst case) to brute force the password.
If anyone has the password for those transceivers, please let me know!