Product specifications

©2006 S.I. Tech, Inc. USB Fiber Product Equipment Manual   
6
LED Definitions 
2172 2173 
Power 
Power ON  Power ON 
OSD Optical signal detected Optical signal detected 
LINK  Logically connected to 2173  Logically connected to 2172 with host data detected 
HOST  Host communication with 2173 hub detected  -- 
OPR --  Port operational 
FAULT  --  Port overcurrent fault 
POWER 
The Models 2170/2171/2172/2173 can be powered from normal 12VDC power. Use S.I.Tech Model 2164 (5W) 
power module as it has 110VAC or 240VAC input and 12VDC output. For 2173-4 port Hub, depending upon 
attached devices you may need high power, power supply. S.I.Tech Model 2164A can be used (17W). 
Both 2164 and 2164A are suitable for use in most countries. 
Power cord supplied with these devices is international color code. It may require a suitable plug assembly for your 
specific country e.g. UK. [Green/yellow conductor is ground. The other two are for AC power terminals.] 
DIAGNOSTICS 
1.  Check step by step setup per above given installation and LED indications. 
2.  Make sure you have USB 1.1 Bit-drivers (2170 and 2171) for USB 1.1 application. USB 2.0 bit-drivers 
(2172/2173) for USB 2.0 applications. 
3.  For USB 2.0, make sure you have USB 2.0 root hub support from USB 2.0 host controller. The USB 2.0 
host controller will be identified in the Windows device manager as “Enhanced” or EHCI controller*. 
4.  Make sure you have multimode cable for multimode 2170, 2171, 2172 and 2173 or single mode cable for 
single mode equipped bit-drivers. 
5.  Make sure you have 12VDC power and in case of 2173 if it is fully loaded, use high power (17W or 
higher) power supply. 
*Refer to 2172/2173 USB 2.0 host as device combinations. 
2172/2173 USB 2.0 extension firmware tested HOST/OS combinations 
USB Host Chipset  Computer  Operating System 
Intel 82891FB  Dell Optiplex GX280  Fedora Core3 (kenel 2.6.9-1.667) 
Intel 82891EB  Generic  Win XP SP2 
Intel 82891EB  Dell Dimension 3000  Win 2000 SP4 
Intel 82891EB  Dell Dimension 3000  Fedora Core3 (kenel 2.6.11-1.27) 
Intel 82891DB  Shuttle XPC  Win 2000 SP4 
SiS 7001  Generic  Win XP SP1 
SiS 7001  Generic  Win 2000 SP4 
NEC PD 720100  PCI exp card  Win XP SP2 
Apple G5 USB 2.0 host  Apple PowerMac G5  OS X (10.3.9) 
2172/2173 USB 2.0 extension firmware incomplete device test list 
Not all devices were tested on every HOST/OS combination. 
USB 2.0 
Plextor PX712-UF external DVD writer 
Epson Stylus PHOTO R300 USB 2.0 printer with card reader 
Canon LiDE 80 USB 2.0 Scanner 








