I purchased an i-ball 4-port externally powered USB Hub 2.0 (product name Piano-423).
My problem is - on the back side of the device, a port for power input has been provided, but it doesn't specify the input voltage either on the device or on the packaging.
Without input voltage this information, it is risky to power it, as it may damage any other devices or PC connected to it. Furthermore, the standard power connector plug tip commonly used with mobile chargers (3mm and 1.6 mm) didn't fit the socket. Why is this non-standard power connector tip are they using?
When searched i-ball website for the product, it did have a page for the above product (Piano 423), but it mentions in a cryptic way the following:
Power Source: Self USB Powered (Port for optional 2.5AMP Adapter).
What voltage should I use for supplying the power???
Stay away from i-ball.
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