Smart Products With Usb Connectors; Minimum Requirements And Guidelines - SMART Board 4000 Series Installation Best Practices

CHAPTER 5
CABLES AND CONNECTORS
There are three types of USB hubs:
Type
Bus-powered
Self-powered
Dynamic-powered
SMART products with USB connectors
Most SMART products feature at least one USB connector.

Minimum requirements and guidelines

Use only USB cables that meet the following requirements:
USB version
1.x and 2.0
3.0 and 3.1
For more information on special extension methods, see USB cable extenders on page 63.
When selecting third-party USB cables, look for cables that have the USB certification logo. The
logo indicates the cable has passed the USB Implementations Forum (USB-IF) regulatory body's
compliance testing for product quality.
NOTE
See Cable best practices on page 40 for general guidelines.
57 smarttech.com/kb/171035
Description
A bus-powered hub draws its power from the USB source device, such
as a computer. A bus-powered hub doesn't need a separate power
connection. It's limited to four downstream ports and can't provide more
power to the downstream devices than that provided by the USB source
device. If you use a bus-powered hub with an extension cable, you can
quickly run out of power. You should purchase a USB cable hub with a
separate power adapter.
A self-powered hub draws power from external power supply and
provides up to 500 mA for USB 2.0 and 900 mA for USB 3.0/3.1 to power
each of the connected USB devices. The amount of power depends on
the specifications of the hub and the version of USB ports available on
the hub.
A dynamic powered hub is a combination of bus- and self-powered hub.
It automatically switches between modes if a separate power supply is
available.
Requirement
Can not be longer than 16' 5" (5 m) without using special extension
methods
Can not be longer than 9' 10" (3 m) without using special extension
methods