It's a mining pool on the miner config screen.  It's only needed if you plan to mine to that pool.  Unsure exactly what you're asking.

Following Bitmain's suggestion I shut down my second S3+ and tested the bad hash board with the other's controller.  The hash board is still bad but I did just find a difference between the two S3+'s.  The one that has remained good has components on the inside above the heatsink as S3's have.  The S3+ with a failed hash board has no components on the reverse side except the ribbon connector of course.

Good thing I did what they said as dust was accumulating on the internal heatsink of the good S3+ behind the front fan.

Did you take pics? I'm curious to see the differences. Maybe it's just due to different batches?

As far as I can tell there's really no such thing as an S3+, it's just the freq the miner was set at. Are there actually hardware differences between a marketed S3 and S3+?

This is an S3_Hash Board_262 V1.1.

https://drive.google.com/file/d/0B_DLmNkCkkVpOS05bkRCblRjVzQ/view?usp=sharing
https://drive.google.com/file/d/0B_DLmNkCkkVpa2NPWmh0VjAwXzg/view?usp=sharing

I tried the image button but get an invalid image type.  Let me know if there's a view problem as I might need to change share settings.

I've tried this board with two S3+ controller boards.  Anyone know if an S3 controller will be harmed or do harm with an S3+ board?

Here's an odd bit.  On the S3 boards from memory there are at least a couple of 12v test points that if I remember correctly are common with 12v in.  On this version board I see only a single 12v test point and it doesn't appear to be common with 12v in however I do see voltage on the board.

Opening up the machine to compare with the other board now.

Odd.  The second working board has no continuity between the 12v test point and 12v in nor any pin on the ribbon cable connector.  Firing the board up, hashes well and no voltage showing at the test point so the test point is dead on both boards.

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Dead crystal would explain it.  Changed crystals on USB miners in the past but looking at the two nearby smt resistors, I suspect that if the crystal is heated enough to remove the resistors will blow away.

That seems to be it.  The bad board generates no heat when powered up.  Dragging out my old Tektronics 475,  with an uncalibrated probe (adjusted with the time VAR on the calibrator at 1khz) I get 27MHz from the crystal's TP11 and putting the VAR back it give me 20MHz so I go to the bad board and there's no oscillation.

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Nope, got it wrong.  I had looked for the 25MHz while the bad board was on the bench.  Putting the bad board back into the miner and giving it the ribbon cable then looking again I get a booming signal.  So, that's not it.

I think ToQ has a regular S3 so I would say around 440 gh/s depending on which batch.  Batch 1 had some that ran a little slower but they sent some money back because of it.

Only thing I know of a mod to get nicehash to have extranonoce .

https://www.nicehash.com/?p=software

Keep in mind firmware is not official, meaning it breaks warranty.