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SURFboard Cable Modem SB4220 Series User Guide
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WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS DEVICE TO RAIN OR MOISTURE. THE DEVICE SHALL NOT BE
EXPOSED TO DRIPPING OR SPLASHING AND NO OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES, SHALL BE PLACED ON THE DEVICE.
CAUTION: TO ENSURE REGULATORY AND SAFETY COMPLIANCE, USE ONLY THE PROVIDED POWER AND INTERFACE
CABLES. TO
PREVENT ELECTRICAL SHOCK, DO NOT USE THIS PLUG WITH AN EXTENSION CORD, RECEPTACLE, OR OTHER OUTLET UNLESS THE
BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE.
CAUTION: DO NOT OPEN THE CABLE MODEM. DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN THE
INSTALLATION AND TROUBLESHOOTING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO. REFER ALL SERVICING TO
QUALIFIED SERVICE PERSONNEL.
It is recommended that the customer install an AC surge arrestor in the AC outlet to which this device is connected. This is to avoid damaging the
equipment by local lightning strikes and other electrical surges.
This product was qualified under test conditions that included the use of the supplied cable between system components. To be in
compliance with regulations, the user must use this cable and install it properly.
Different types of cord sets may be used for connections to the main supply circuit. Use only a main line cord that complies with all
applicable product safety requirements of the country of use.
Installation of this product must be in accordance with national wiring codes.
To prevent overheating, do not block the ventilation holes on the sides of the cable modem.
Wipe the cable modem with a clean, dry cloth. Never use cleaning fluid or similar chemicals. Do not spray cleaners directly on the unit or use forced
air to remove dust.