Exhibit II

to

Schedule 13G

Joint Filing Agreement

The undersigned persons agree and consent to the joint filing on their behalf of this Schedule 13G dated March 9, 2018 in connection with their beneficial ownership of INPHI Corp. Each of Columbia Seligman Communications & Information Fund and Columbia Management Investment Advisers, authorizes Ameriprise Financial, Inc. to execute the Schedule 13G to which this Exhibit is attached and make any necessary amendments thereto.

Ameriprise Financial, Inc.
By:	/s/ Amy K. Johnson
	Amy K. Johnson
Title:	Senior Vice President and Chief Operating Officer-Asset Management
Columbia Management Investment Advisers, LLC
By:	/s/ Amy K. Johnson
	Amy K. Johnson
Title:	Managing Director and Global Head of Operations
Columbia Seligman Communications & Information Fund
By:	/s/ Paul Goucher
Name: Paul Goucher
Title: Senior Vice President and Assistant Secretary