Common use of Form of Guarantee Clause in Contracts

Form of Guarantee. The form of Guarantee shall be set forth on the Securities as follows: For value received, Arch Capital Group Ltd. hereby unconditionally guarantees on an unsecured, unsubordinated basis to the holder of this Security the payment of principal of (and premium, if any) and interest on the Security upon which this Guarantee is endorsed in the amounts and at the times when due and payable whether by declaration thereof, or otherwise, and interest on the overdue principal of (and premium, if any) and interest on such Security, if lawful, and the payment or performance of all other obligations of the Company under the Indenture or the Securities, to the holder of such Security and the Trustee, all in accordance with and subject to the terms and limitations of such Security and Article Thirteen of the Indenture. This Guarantee will not become effective until the Trustee duly executes the certificate of authentication on this Security. This Guarantee shall be governed by and construed in accordance with the laws of the State of New York. Dated: ARCH CAPITAL GROUP LTD. By: Name: Title:

Form of Guarantee. The form of Guarantee shall be set forth on the Securities as follows: For value received, Arch Capital Group Ltd. hereby unconditionally guarantees on an unsecured, unsubordinated basis to the holder of this Security the payment of principal of (and premium, if any) and interest on the Security upon which this Guarantee is endorsed in the amounts and at the times when due and payable whether by declaration thereof, or otherwise, and interest on the overdue principal of (and premium, if any) and interest on such Security, if lawful, and the payment or performance of all other obligations of the Company under the Indenture or the Securities, to the holder of such Security and the Trustee, all in accordance with and subject to the terms and limitations of such Security and Article Thirteen of the Indenture. This Guarantee will not become effective until the Trustee duly executes the certificate of authentication on this Security. This Guarantee shall be governed by and construed in accordance with the laws of the State of New York. Dated: ARCH CAPITAL GROUP LTD. By: ____________________________ Name: Title:: ARTICLE THREE THE SECURITIES

Form of Guarantee. The form of Guarantee shall be set forth on the Securities as follows: For value received, Arch Capital Group Ltd. hereby unconditionally guarantees on an unsecured, unsubordinated subordinated basis to the holder of this Security the payment of principal of (and premium, if any) and interest on the Security upon which this Guarantee is endorsed in the amounts and at the times when due and payable whether by declaration thereof, or otherwise, and interest on the overdue principal of (and premium, if any) and interest on such Security, if lawful, and the payment or performance of all other obligations of the Company under the Indenture or the Securities, to the holder of such Security and the Trustee, all in accordance with and subject to the terms and limitations of such Security and Article Thirteen and Article Fifteen of the Indenture. This Guarantee will not become effective until the Trustee duly executes the certificate of authentication on this Security. This Guarantee shall be governed by and construed in accordance with the laws of the State of New York. Dated: ARCH CAPITAL GROUP LTD. By: Name: Title:: ARTICLE THREE THE SECURITIES

Form of Guarantee. The form of Guarantee shall be set forth on the Securities as follows: For value received, Arch Capital Group Ltd. Mediacom Communications Corporation hereby unconditionally and irrevocably guarantees on an unsecured, unsubordinated basis to the holder of this Security the payment of principal of (and premiumof, if any) and interest on the Security upon which this Guarantee is endorsed in the amounts and at the times time when due and payable whether by declaration thereof, or otherwise, and interest on the overdue principal of (and premiuminterest, if any) and interest on , of such Security, if lawful, and the payment or performance of all other obligations of the Company Issuers under the Indenture or the Securities, to the holder of such Security and the Trustee, all in accordance with and subject to the terms and limitations of such Security and Article Thirteen of the Indenture. This Guarantee will not become effective until the Trustee duly executes the certificate of authentication on this Security. This Guarantee shall be governed by and construed in accordance with the laws of the State of New York, without regard to conflict of law principles thereof. Dated: ARCH CAPITAL GROUP LTD. Mediacom Communications Corporation By: ------------------------------- Name: Title:

Form of Guarantee. The form of Guarantee shall be set forth on the Securities as follows: For value received, Arch Capital Group Ltd. hereby unconditionally guarantees on an unsecured, unsubordinated basis to the holder of this Security the payment of principal of (and premium, if any) and interest on the Security upon which this Guarantee is endorsed in the amounts and at the times when due and payable whether by declaration thereof, or otherwise, and interest on the overdue principal of (and premium, if any) and interest on such Security, if lawful, and the payment or performance of all other obligations of the Company under the Indenture or the Securities, to the holder of such Security and the Trustee, all in accordance with and subject to the terms and limitations of such Security and Article Thirteen of the Indenture. This Guarantee will not become effective until the Trustee duly executes the certificate of authentication on this Security. This Guarantee shall be governed by and construed in accordance with the laws of the State of New York. Dated: ARCH CAPITAL GROUP LTD. By: Name: Title:: ARTICLE THREE THE SECURITIES