Extron electronics SW2 USB - Connecting Multiple SW Usbs in a System

SW USB Series • Installation 11
Connecting Multiple SW USBs in a System
The USB specification states that a maximum of five hubs (or five SW USBs) can be
connected in a series.
NOTE: Do not exceed five cascaded hubs and a total of 127 peripheral devices in the
entire system.
The following illustration shows an example of a single host with the maximum of five
SW USB switchers cascaded in a series.
Printer
USB Hard
Drive
USB Flash
Drive
USB Flash
Drive
USB Flash
Drive
Video
Webcam
Camera
Keyboard
Mouse
Host Tier
Tier 1
Tier 2
Tier 3
Tier 4
Tier 5
SW4 USB Plus
USB SWITCHER
EXEC
MODE
1
2
3
4
1
2
3
4
INPUT
1
2
3
4
OUTPUT
ACTIVE USB
SW4 USB Plus
USB SWITCHER
EXEC
MODE
1
2
3
4
1
2
3
4
INPUT
1
2
3
4
OUTPUT
ACTIVE USB
SW4 USB Plus
USB SWITCHER
EXEC
MODE
1
2
3
4
1
2
3
4
INPUT
1
2
3
4
OUTPUT
ACTIVE USB
SW4 USB Plus
USB SWITCHER
EXEC
MODE
1
2
3
4
1
2
3
4
INPUT
1
2
3
4
OUTPUT
ACTIVE USB
SW4 USB Plus
USB SWITCHER
EXEC
MODE
1
2
3
4
1
2
3
4
INPUT
1
2
3
4
OUTPUT
ACTIVE USB
Figure 8. Example of a Host with Five SW USB Switchers Cascaded in a Series