Additional Information - BenQ PH460 Installation Handbook

Additional information

Your LCD display provides USB 2.0 ports for connecting to various devices including
computers, flash drives and wireless LAN adapters. This section provides basic information
about the USB 2.0 interface and serves as a reference for the deployment of your USB
connections.
USB terminology
Term
Host, A USB network consists of one master and multiple slave devices in a
star topology as illustrated below:
Function
The master device (referred to as the "Host") is on top of all other
slave devices (called "Function"). A computer is the most common
USB host. Any device that has a USB host controller and related
hardware and software installed can also become a USB host. A USB
function can be a USB mouse, keyboard or storage device.
A maximum of 7 tiers (including the root tier) are allowed in a single
USB network. Note that a USB device that performs both as a hub and
a function occupies two tiers.
Description/explanation
Tier 1 (root tier)
Tier 2
Function
Tier 3
Function Function
Tier 4
Function
Tier 5
Function Function
Tier 6
Function Function
Tier 7
Host
Root hub
Function
Hub A
Hub A
Function Function
Hub C Hub A
Function
Hub D
Hub A
Hub E
Hub A
Function
Function
Hub B
Hub A
Function
Function
Function
Hub F
Hub A
Cable extension guide 19