The SB2100 has a different light display then the 3100 and 4100. The 3100 and 4100 have 5 lights, where as the 2100 has 3 on the front and one on the back, (See below for details).NOTE-4101/4200 have a 6 light LED display!
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SURFBOARD 31-41/4200
(Click image for LED's descriptions & larger view)
3100-4100

4101-4200-4220

Click here for rear panel description
All DOCSIS compliant
Modem status-Brand NEW
| Cable Modem Information
Model #: Sb3100/3100d-4100/4200 Connection: Ethernet and USB. HFC MAC ID Location: Back HTML Interface: Yes
Cable Modem Downloads 4100 Installation PDF 3100 Installation PDF 3100d Installation PDF
Usb Driver Downloads -XP compliant-YES
SurfBoard 4200-4220 series Usb Drivers -NEW
Cable Modem HTML Interface Ethernet/Usb IP 192.168.100.20 Subnet mask: 255.255.255.0 Browser Address:192.168.100.1
SB-3100 Internal Modem pages SB-4100/4200 Internal Modems pages
Cable Modem Notes; The 4100 has 5 LED 's where as the 4101/42xx has 6 LED's.

Motorola Product Support website
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Motorola CyberSURFR
 Click here for LED layout
Click here for LED description
Click here for rear panel description
Motorola CyberSURFR Wave
(Click image larger view)

Click here for LED layout
Click here for LED description
Click here for fornt & rear panel description
Modem status's-BOTH DISCONTINUED
BOTH non DOCSIS compliant
| Cable Modem Information
Models #: CyberSURFR & CyberSURFR WAVE Connection: Ethernet. HFC MAC ID Location: Bottom HTML Interface: No.
Cable Modem Downloads None
Usb Driver Downloads NA -Ethenet only
Cable Modem Notes; These Cable Modems are "Prioprietary" Thus they do not adhere to the DOCSIS standard.
I'll be honest with you I truely dont know what the differances between these 2 modems are . But since they are both and have been discontinued for a long time now and hardly any of us ever see these modems........Do we really care that much?

Motorola Product Support website |
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SURFBOARD 2100 SERIES
(Click image for LED's & larger view)
2100-2100d

Click here for rear panel description
Modem status-DISCONTINUED
DOCSIS compliant
The letter "d" at the end of the model # represents that the Cable Modem has Dialup capability.
| Cable Modem Information
Model #: Sb2100-2100d Connection: Ethernet and USB. HFC MAC ID Location: Back HTML Interface: Yes Cable Modem Downloads 2100 Installation PDF 2100d Installation PDF
Usb Driver Downloads
-XP compliant-YES
Cable Modem HTML Interface Ethernet/Usb IP 192.168.100.20 Subnet mask: 255.255.255.0 Browser Address:192.168.100.1
SB-2100 Internal Modem pages SB-2100/31d Internal Modem pages
Cable Modem Notes; The 2100d has a built in Dialup that auto dials in when the power is plugged in. The dialup is configured from within the Modem.

Motorola Product Support website
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SURFBOARD DM100
(Click image for LED's & larger view)
DM100

Click here for rear panel description
Modem status-DISCONTINUED ?
DOCSIS compliant | Cable Modem Information
Model #: DM100 Connection: Ethernet and USB. HFC MAC ID Location: Back HTML Interface: Unkown-Dont think it does. Cable Modem Downloads none
Usb Driver Downloads
I cannot gaurantee they will work with XP
Cable Modem Notes; None

Motorola Product Support website
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Cable Modem NOTES: If you have a problem connecting with the SB4100 modem where the lights cycle and then all the lights go out again with the connection not working try pressing the standby button.The standby button on the SB4100 gets stuck on some modems. Fortunately Motorola has re-designed the standby button on the new Surfboard 4101.
The SB4100-0.4.4.0-SCM06-NOSH firmware upgrade fixes a problem with the 4.0.12-SCMxx version that was intermittently causing poor upload speeds and the 4.0.9-SCMxx RF interference problem that could cause the Ethernet interface to freeze.
You can check your firmware by going to http://192.168.100.1/ and click on the "Help" tab. As of rigth now I have seen now significant differance between the 4100/4101 and 4200 Cable Modems. Meaning the screenshots for the 4100 posted above should be applicable for the 4101 and 4200 series Surfboard Modems. SurfBoard Usb drivers have a uninstall executable to completely remove the drivers from the Windows registry, something the uninstall Wizard of Windows sometimes cannot remove properly, If you are having problems loading Usb drivers, run the remove.exe
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