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Supplement to the
Fidelity
® Advisor High Income Advantage Fund
Class A, Class T, Class B, and Class C
December 30, 2009
Prospectus

Effective after the close of business on September 1, 2010 (the "Effective Date"), Class B shares will be closed to new accounts and additional purchases by existing shareholders. After the Effective Date, shareholders owning Class B shares may continue to hold those shares (and any Class B shares acquired after that date pursuant to an exchange or distribution reinvestment) until they automatically convert to Class A shares under the existing conversion schedule. Existing shareholders of Class B shares may continue to exchange their Class B shares for Class B shares of other Fidelity funds that offer Advisor classes of shares or for Advisor B Class shares of Treasury Fund until they convert to Class A. Existing Class B shareholders may also continue to add to their accounts through the reinvestment of dividends and capital gain distributions (including through the Directed Dividends® Option) until their conversion dates.

After the Effective Date, any purchase orders for Class B shares (other than for an exchange or a distribution reinvestment) received by a fund will be deemed to be a purchase order for Class A shares of the fund and will be subject to any applicable Class A front-end sales charge. For purposes of determining the applicable Class A sales charge, the value of a shareholder's account will be deemed to include the value of all applicable shares in eligible accounts, including Class B shares. Please see "Fund Distribution" for more information.

After the Effective Date, the Reinstatement Privilege will no longer be offered for Class B shares. However, shareholders who redeem Class B shares and wish to reinvest all or a portion of the redemption proceeds within 90 days of redemption can invest in Class A shares without incurring a front-end sales charge. To qualify, shareholders must notify Fidelity in writing in advance of reinvestment and must reinstate shares into an account with the same registration. This privilege may be exercised only once by a shareholder with respect to the fund and certain restrictions may apply.

All other Class B share features, including but not limited to distribution and service fees, contingent deferred sales charges (CDSC) and conversion features, will remain unchanged.

HY-10-02 June 11, 2010
1.742522.125

Also effective on or about July 12, 2010, the CDSC on investments in Class A shares of $1 million or more will change. Effective on such date, investments in Class A shares of $1 million or more may, upon redemption less than 18 months after purchase, for any reason, including failure to maintain the account minimum, be assessed a CDSC of 1.00%. The actual CDSC you pay may be higher or lower than that calculated using this percentage due to rounding. The impact of rounding may vary with the amount of your investment and the size of the class's NAV.

The following replaces similar information found in the footnotes to the "Fee Table" on page 3.

Class A and Class T purchases of $1 million or more will not be subject to a front-end sales charge. Such Class A and Class T purchases may be subject, upon redemption, to a contingent deferred sales charge (CDSC) of 1.00% or 0.25%, respectively.

Effective August 31, 2010, the following information replaces the similar information found under the heading "Portfolio Manager(s)" in the "Fund Summary" section on page 7.

Harley Lank (portfolio manager) has managed the fund since September 2009.

Effective August 31, 2010, the following information replaces the biographical information found in the "Fund Management" section on page 26.

Harley Lank is portfolio manager of the fund, which he has managed since September 2009. He also manages other Fidelity funds. Since joining Fidelity Investments in 1996, Mr. Lank has worked as a research analyst and portfolio manager.

Effective on or about July 12, 2010, the following replaces similar information found in the "Fund Distribution" section beginning on page 27.

As described in detail in this section, you may be entitled to a waiver of your sales charge, or to pay a reduced sales charge, when you buy or sell your shares. In the event of changes in sales charges, sales charges, if any, in effect at the time of purchase generally will apply.

Effective on or about July 12, 2010, the following replaces similar information under the "Sales Charges and Concessions - Class A" table in the "Fund Distribution" section on page 28.

Investments in Class A shares of $1 million or more may, upon redemption less than 18 months after purchase, for any reason, including failure to maintain the account minimum, be assessed a CDSC of 1.00%. The actual CDSC you pay may be higher or lower than that calculated using this percentage due to rounding. The impact of rounding may vary with the amount of your investment and the size of the class's NAV.

Effective on or about July 12, 2010, the following replaces similar information found in the "Fund Distribution" section beginning on page 30.

You may receive a Class A or Class T front-end sales charge reduction on your purchases of Class A and Class T shares made during a 13-month period by signing a Letter of Intent (Letter). File your Letter with Fidelity no later than the date of the initial purchase toward completing your Letter.

Effective on or about July 12, 2010, the following replaces similar information found in the "Fund Distribution" section beginning on page 30.

If you do not complete your Letter, you must pay the increased front-end sales charges due in accordance with the sales charge schedule in effect when your shares were originally bought. Fidelity may redeem sufficient escrowed Class A or Class T shares to pay any applicable front-end sales charges.

The following supplements information in the "Fund Distribution" section on page 34.

10. (Applicable to Class B only) From the Fidelity Advisor 403(b) program.

Supplement to the
Fidelity
® Advisor High Income Advantage Fund
Institutional Class
December 30, 2009
Prospectus

Effective August 31, 2010, the following information replaces the similar information found under the heading "Portfolio Manager(s)" in the "Fund Summary" section on page 6.

Harley Lank (portfolio manager) has managed the fund since September 2009.

Effective August 31, 2010, the following information replaces the biographical information found in the "Fund Management" section on page 24.

Harley Lank is portfolio manager of the fund, which he has managed since September 2009. He also manages other Fidelity funds. Since joining Fidelity Investments in 1996, Mr. Lank has worked as a research analyst and portfolio manager.

HYI-10-01 June 11, 2010
1.742523.118

Supplement to the

Fund

Class A

Class T

Class B

Class C

Institutional
Class

Fidelity® Advisor Floating Rate High Income Fund

FFRAX

FFRTX

FFRBX

FFRCX

FFRIX

Fidelity Advisor High Income Fund

FHIAX

FHITX

FHCBX

FHNCX

FHNIX

Fidelity Advisor High Income Advantage Fund

FAHDX

FAHYX

FAHBX

FAHEX

FAHCX

Fidelity Advisor Value Fund

FAVFX

FTVFX

FBVFX

FCVFX

FVIFX

Funds of Advisor Series I

STATEMENT OF ADDITIONAL INFORMATION

December 30, 2009

Effective May 1, 2010, Richard Fentin and Matthew Friedman serve as lead co-managers of Fidelity Advisor Value Fund. Mr. Friedman will receive compensation for his services. Information with respect to Mr. Friedman's compensation, holdings, and accounts managed will be provided in a supplement to this SAI once available.

Effective June 7, 2010, Shadman Riaz, Steve Barwikowski, John Mirshekari, Laurie Bertner, and Justin Bennett are co-managers of Fidelity Advisor Value Fund and will receive compensation for their services. Information with respect to their compensation, holdings, and accounts managed will be provided in a supplement to this SAI once available.

Effective July 31, 2010, Richard Fentin no longer serves as lead co-manager of Fidelity Advisor Value Fund. All information with respect to Richard Fentin is no longer applicable.

Effective August 31, 2010, Thomas Soviero no longer serves as co-manager of Fidelity Advisor High Income Advantage Fund. All information with respect to Thomas Soviero is no longer applicable.

ACOM10B-10-02 June 11, 2010
1.734041.144