Do you have to modify the usb cable, cutting/removing the VCC and GND wires when using external psu.

I don't know about VCC but I did cut the red VBUS (+5V) wire in the primary USB cable connected to the host.

This is a review of my 145 BE strong farm, and a warning review with regard to to the 13-porter bay hubs.

My farm is spread over 2 machines.

One hosts 3 13-porter bay hubs + 9 D-Links + 1 Rosewil/ST-Lab. 3 D-Links are connected to the host via 3-port hub in an old screen. The remaining D-Links and Rosewill are connected to all 7 ports of master D-Link, which is powered by an AT PSU (its wall adapter failed, so modding was required):




The other machine hosts 3 more 13-porter bay hubs, plus a few loose BEs, connected to back ports (I have 10 of those):



Now, you may have noticed that two of the 13-porters in both machines are missing 4 BEs. First yesterday on one machine, and then today on the other machine exactly the same 4 ports (4, 5, 6, 7 from left) failed. The don't supply any power. I took a peek inside and cannot see any physical damage on the PCBs, so it seems like something failed in the controller chip. An interesting observation: the 13-porters have 2 controller chips. The rightmost is connected to the incoming USB line and feed 6 ports. Its 7th contact runs to the leftmost chip, which then feeds the remaining 7 ports.

So, out of 6 13-porters that I have, 2 experienced the same failure and I am now 8 ports short, having temporarily spread out BEs over other machines with free ports. Will either buy an extra Rosewill/ST-Lab or will modify power in on the remaining D-Links to give myself an extra usable port on each.

Beware these as well. http://www.ebay.com/itm/140947579838?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

Won't power more than 2-3 BEs reliably. Lots of data loss, seemingly, as well.

I figured it was worth a shot for $10. 

Thank you for a suggested solution, m-sean. Alas, last time I soldered anything was about 15 years ago, and I don't even have a soldering iron at home (the smell would be frowned upon  )
In the meantime, I am going the preventive route and remove 1 BE from port #4 from each of the remaining functional hubs to avoid fuse burn-out on them as well. I'll add a note to this effect in the table in OP.

Between the failed ports and the ones that I am not using intentionally, I have lost 12 ports, or 1 whole hub worth of ports down the drain. 

@wrenchmonkey: The hub you are pointing out is actually BigTek in disguise.

Oh, yet another name! By the looks of it, I already have this guy in the main table under the names of Rosewill and ST-Lab, and didn't realise before now that Vantec is the same thing! Did it have 3A or 4A adapter included? Rosewill/ST-Lab have 4A which is good for 8 ports.

I have now modded 3 D-Links and 1 ST-Lab, connecting them to Molex splitters and power them from an external AT PSU with 18A 5V rail. ST-Lab now runs 10 BEs and D-Links 7 BEs. Make sure that you observe polarity: both D-Link and ST-Lab adapter cables had (+) on the inner pin and its corresponding line was marked with dashes (---- ----) and needed to be connected to the red Molex cable (+5V).

I've got 3 anker 9+1 3.0 hubs connected to the back of a Mac mini and can't get any more then 10 ASICMiners going with cgminer. Is it the USB hub or is this something to do with OSX? Because everyone seems to always claim the anker USB hubs work.

Here is a couple of pictures of my 56  USB miners running off two 20a PSU's Have ran as many as 31 off one 20a

Are you using an R-Pi or a computer..?

Are you using the same 10-port hub as a host hub to connect 4 of the 10-port hubs together..?

I see you have 7 BE's in each of the 10-port hubs, is there a problem when connecting more than 7 BE's in one hub..?