I don't see an option to change clock speed or mem settings in E3.
I was unable to setup using antpool. I added new worker, add the same worker in E3, waited for :15min. nothing got updated in Dashboard except one E3 worker is connected with 0 h/s. Hardware as also showing 0h/s.
I am using eth address and atleast it is showing around 190h/s. Anyone knows whats the payment threshold when using eth address as worker.
If you create a backup of the config you can open the bnminer conf file and potentially edit these:
"bitmain-freq" : "350",
"bitmain-voltage" : "0706",
Seal it up and upload it back to the unit. Now, I have no idea what the appropriate values are

So do that at your own risk.
That wont do anything, they are running at 1.6 GHZ stock so they have hardwired clocks inside the miner. Looks like they learned from Zcash miner and are now locking down all their miners.
Either way based on the memory specs these wouldn't go much higher anyway.