SUPPLEMENT DATED FEBRUARY 29, 2008

TO

PROSPECTUS DATED DECEMBER 18, 2007

FOR SUN PROTECTOR VARIABLE UNIVERSAL LIFE INSURANCE

ISSUED BY SUN LIFE ASSURANCE COMPANY OF CANADA (U.S.)

SUN LIFE OF CANADA (U.S.) VARIABLE ACCOUNT I

The following investment options are not currently available:

SCSM Goldman Sachs Mid Cap Value Fund

SCSM Goldman Sachs Short Duration Fund

SCSM Lord Abbett Growth & Income Fund

SCSM PIMCO High Yield Fund

THIS SUPPLEMENT SHOULD BE READ AND RETAINED FOR FUTURE REFERENCE.