Installing a new cpu cooler

[jamessandlin]

Just noticed my mobo doesn't have the metal piece for this liquis cooler to clamp on, can i buy one or would I have to get a new mobo? Its an Asus m5a7 and cooler is coolermaster 120 l any help would be greatly appreciated

 

[jamessandlin]

A https://imgur.com/gallery/ZacPB