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how much power? Macs?
Thank you for your inquiry. The unit does come with a power supply, but unfortunately, IOGEAR has not published the power requirements for this unit. The description does include the following:
With the included power supply connected, the GUH374 can charge and sync smartphones and has enough current to power multiple external hard disk drives.

In terms of Mac compatibility, the specs do not explicitly state that Mac devices are supported. However, the quick start guide mentions that the unit works with USB 2.0 and 1.1 on a Mac.

As a note, to achieve USB 3.0 SuperSpeeds, the hub must be attached to a USB 3.0 port and the connected peripheral must also be a USB 3.0 device.
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where is this manufactured?
Thank you for your inquiry. We have just received confirmation form IOGEAR that this product is manufactured in China.
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Hello! Does this come with a cord and how long is it? Thank you.
Thank you for your inquiry. The GUK374 comes packaged with:
1 x SuperSpeed USB 3.0 4-Port Hub
1 x USB 3.0 Power Adapter
1 x Micro USB Cable
1 x Warranty Card
1 x Quick Start Guide

According to our IOGEAR contact, the cords are approximately 1 meter (3 feet)
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