Product specifications

S.I. TECH MODELS 2170 AND 2171 (USB 1.1 PRODUCTS)

LED Definition

LED 2170 2171

POWER Power ON Power ON

LINK Optical signal from 2171 detected Host USB data detected

HOST 2170/2171 pair enumerated with host USB

PORT Host USB data detected at port

Installation

1. Connect fibers between Model 2170 and Model 2171

2. Apply power to model 2170 and model 2171

2170 LEDs 2171 LEDs

PWR LINK HOST PWR LINK PORT

On On Off On Off Off

3. Connect 2170 to PC with USB cable

2170 LEDs 2171 LEDs

PWR LINK HOST PWR LLINK PORT

On On On On On Off

4. Connect 2171 USB hub ports to USB devices with USB cables

2170 LEDs 2171 LEDs

PWR LINK HOST PWR LINK PORT

On On On On On On

USB Device Removal

1. Quit USB device application

2. Remove USB device

Models 2170 and 2171 Removal

1. Remove all USB devices from 2171

2. Disconnect host USB cable from 2170

3. Disconnect power and remove fibers from 2170 and 2171

Operational Notes

A 2170/2171 pair cannot be cascaded with another 2170/2171 pair due to cumulative delays and possibility of

exceeding the capabilities of the protocol. Cascading may sometimes work but is not reliable.

The 2170/2171 pair can be connected in a cascaded arrangement with up to four USB hubs. The level of the

2170/2171 pair in the cascade is not important. A 2170 can be connected to a port of an upstream USB hub and hubs

can be connected to 2171 ports. 2170s can be connected to any or all of the ports on an USB hub. USB hubs can be

connected to each port on a 2171.