Exhibit 4.5

Execution Version

JOINDER AGREEMENT TO REGISTRATION RIGHTS AGREEMENT

September 7, 2016

Reference is hereby made to the Registration Rights Agreement, dated as of June 1, 2016 (the “Registration Rights Agreement”), by and among DIAMOND 1 FINANCE CORPORATION, a Delaware corporation (“Finco 1”), DIAMOND 2 FINANCE CORPORATION, a Delaware corporation (together with Finco 1, the “Fincos”), and the Representatives on behalf of the several Initial Purchasers concerning registration rights relating to the Fincos’ (i) $3,750,000,000 aggregate principal amount of their 3.480% First Lien Notes due 2019 (the “2019 Notes”), (ii) $4,500,000,000 aggregate principal amount of their 4.420% First Lien Notes due 2021 (the “2021 Notes”), (iii) $3,750,000,000 aggregate principal amount of their 5.450% First Lien Notes due 2023 (the “2023 Notes”), (iv) $4,500,000,000 aggregate principal amount of their 6.020% First Lien Notes due 2026 (the “2026 Notes”), (v) $1,500,000,000 aggregate principal amount of their 8.100% First Lien Notes due 2036 (the “2036 Notes”) and (vi) $2,000,000,000 aggregate principal amount of their 8.350% First Lien Notes due 2046 (the “2046 Notes” and, together with the 2019 Notes, the 2021 Notes, the 2023 Notes, the 2026 Notes and the 2036 Notes, the “Notes”). Unless otherwise defined herein, terms defined in the Registration Rights Agreement and used herein shall have the meanings given them in the Registration Rights Agreement.

1. Joinder of the Issuers. Each of Dell International L.L.C., a Delaware corporation (“Dell International”), and EMC Corporation, a Massachusetts corporation (“EMC”), hereby acknowledges that it has received a copy of the Registration Rights Agreement and absolutely, unconditionally and irrevocably acknowledges and agrees with the Initial Purchasers that by its execution and delivery hereof it shall (i) join and become a party to the Registration Rights Agreement and be deemed to be an Issuer under the Registration Rights Agreement; (ii) be bound by all covenants, agreements and acknowledgements applicable to such party as set forth in and in accordance with the terms of the Registration Rights Agreement; and (iii) perform all obligations and duties as required of it as an Issuer in accordance with the Registration Rights Agreement.

2. Joinder of the Guarantors. Each of the undersigned (other than Dell International and EMC) hereby acknowledges that it has received a copy of the Registration Rights Agreement and absolutely, unconditionally and irrevocably acknowledges and agrees with the Initial Purchasers that by its execution and delivery hereof it shall (i) join and become a party to the Registration Rights Agreement and be deemed to be a Guarantor under the Registration Rights Agreement; (ii) be bound by all covenants, agreements and acknowledgements applicable to such party as set forth in and in accordance with the terms of the Registration Rights Agreement; and (iii) perform all obligations and duties as required of it as a Guarantor in accordance with the Registration Rights Agreement.

3. Governing Law. THIS JOINDER AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK. EACH OF THE PARTIES HEREBY WAIVES ANY RIGHT TO TRIAL BY JURY IN ANY ACTION, PROCEEDING OR COUNTERCLAIM ARISING OUT OF OR RELATING TO THIS JOINDER AGREEMENT.

4. Counterparts. This Joinder Agreement may be executed in any number of counterparts and by the parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute one and the same agreement.

5. Amendments. No amendment or waiver of any provision of this Joinder Agreement, nor any consent or approval to any departure therefrom, shall in any event be effective unless the same shall be in writing and signed by the parties hereto.

6. Headings. The headings in this Joinder Agreement are for convenience of reference only and shall not limit or otherwise affect the meaning hereof.

[Signature Page Follows]

-2-

IN WITNESS WHEREOF, the undersigned have executed this Joinder Agreement as of the date first written above.

[Signature page to Joinder to Registration Rights Agreement]

[Signature page to Joinder to Registration Rights Agreement]

[Signature page to Joinder to Registration Rights Agreement]

[Signature page to Joinder to Registration Rights Agreement]

[Signature page to Joinder to Registration Rights Agreement]

[Signature page to Joinder to Registration Rights Agreement]

[Signature page to Joinder to Registration Rights Agreement]

[Signature page to Joinder to Registration Rights Agreement]

[Signature page to Joinder to Registration Rights Agreement]

[Signature page to Joinder to Registration Rights Agreement]

[Signature page to Joinder to Registration Rights Agreement]

[Signature page to Joinder to Registration Rights Agreement]

[Signature page to Joinder to Registration Rights Agreement]

[Signature page to Joinder to Registration Rights Agreement]

[Signature page to Joinder to Registration Rights Agreement]