Topic: [SOLD OUT] Dipo Electronic 19 port USB hubs - page 6. (Read 15740 times)

a few pics...

Description
This is a 19 port hub with an integral power supply that is capable of reliably supplying MORE than 700mA per port without overheating or becoming a fire hazard. Comes with usb and power cables, everything you need to make the hub work out of the box.

-   Fully 480mb/s at each port
-   16 Front facing Standard A USB ports
-   3 Side facing Standard A
-   1 Master hub connection Standard B for connection to Computing Equipment or other hubs
-   Fully fused internally via multiple poly-fuse resettable fuses both on each individual port and on the main power feed to the Ports.
-   UK/EU/USA Plugs available!
-   Hub runs COOL
-   Colour: Silver

Unlike cheaper USB ports that only implement links at USB 1.0 standard (12mb/s speeds but state they are 'compatible' with USB 2.0) this is a professional FULL 480 Mb/s port that complies and implements the full 2.0 USB standard. It may also be used to connect to generic USB 1.0 equipment.

The good thing about these hubs is that you can load them up with 19 Bi-Fury miners (around 76 gh/s) and the miners would STILL run as intended.

Price

bitcoin/paypal: $150 usd

Weight
2.2 Kg each hub



Payment Methods
1. Bitcoin: you can just pay BTC and attach the transaction details to this thread.
2. Paypal (PM me for details)

Bitcoin Payment Address: 16NqeYCSwU8fx7FhEpQiuYGaQJgssDuuwS



SHIPPING

There are two options available:

1. Expedited Airmail (Speed post) with tracking number (2-5 days):  $70 usd (additional items +$30 usd)
2. Normal Airmail with tracking number (5-14 days) : $40 usd (additional items +$20 usd)

The time it takes for normal airmail really depends. I have seen it as fast as 4 says to places like USA. Right now isn't a busy time so they should be no delays. I have regular shipments going to the post office Monday, Wednesday, Friday and Saturday

I really NEED the following PM info:

1. Full address (if this is wrong then it CANNOT be delivered)
2. Phone number (if express, so the carrier can arrange delivery)
3. Voltage you want it set to 110/220
4. price you translated at (So it is visible if you got the discount for BTC)


Background
Why our hub is 'special'?
(ungrounded BUCK convertors on mains supply are potential killers)
A point than not many people know is that over 90% of the powered USB hubs on the market are actually 'defective', and in many cases have an inherent and potentially dangerous electrical fault.(It's why Chicks in China keep electrocuting themselves when answering a charging  mobile), this is what happens when you design products in isolated labs with little regard for the environment they are used in. (then rip the design without understanding the implications and decision making)

Potentially one of the reasons why we keep seeing so many people with  USB chains that go down or fail to recognize devices when they are plugged in. Usually the people with the SBC's  ( Pi, etc) are more prone to these faults, because these  powered USB hubs usually come with a PSU that has been ripped from a phone PSU design and as such were never designed to operate in a USB environment worse many USB implementations incorrectly mix the shield with the 0V line.

A very simple test…..
Take your USB hub PSU and measure the output voltage, you should see about 5-12v.
Now… find an earthed point (metal computer case) and measure first from GND to the center pin of the 5-12v PSU and then GND to the outside tab of the 5-12v PSU.(making a note of the readings each time)
On the shitty PSU's you can maybe read as much as 120-160v between the PSU & GND.
So….. the question is… when you have your nice shiny computer running, and you plug in your 10USD USB hub with the external PSU, WTF does the 120-160V difference in potential go once the supply is no longer floating?
(…. yep into the GND connection of the connected USB equipment, which then throws the USB silicon out of wack & possibly causing latch-up of the silicon.)


Powered USB hubs are a VERY bad idea unless they are EARTHED and have PSU's DESIGNED with a Delta.!!!!
A REALLY REALLY cool trick is that if you 'stack' multiple 'cheap' powered hubs into each other and reverse the PSU two pin plugs, you can build a voltage multiplier.