Compound device connection – Smart Technologies Smart Board 800 Series User Manual

Page 26

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Compound device connection

In this diagram, you can see that connecting a compound device limits the maximum distance to

5 × 16' (5 m) = 80' (25 m).

Compound device

Root

Hub

Hub

1

Hub

2

Hub

3

Hub

4

Hub

5

Function

Host

Host (Tier 1 ) Tier 2 Tier 3 Tier 4 Tier 5 Tier 6 Tier 7

16 ' (5 m ) + 16 ' (5 m ) + 16 ' (5 m ) + 16 ' (5 m ) + 16 ' (5 m ) = 80 ' (25 m )

N O T E

SMART Board 800 series interactive whiteboard systems are compound devices.

Host with internal non-root hub and compound device connection

In this diagram, you can see that connecting a compound device and a host with an internal non-root

hub further limits the maximum distance to 4 × 16' (5 m) = 64' (20 m).

Host with non

-root hub

Compound device

Root

Hub

Hub

1

Hub

2

Hub

3

Hub

4

Hub

5

Function

Host

Host (Tier 1 ) Tier 2 Tier 3 Tier 4 Tier 5 Tier 6 Tier 7

16 ' (5 m ) + 16 ' (5 m ) + 16 ' (5 m ) + 16 ' (5 m ) = 64 ' (20 m )

A P P E N D I X

A

USB 2.0 specification primer

22

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