From the Automation direct FAQ pages: Question Is the TI-435 the same as the D4-440? AnswerYes, the D4-440 is a direct replacement.
The D4-440 is sold on the web at www.automationdirect.com; manuals and technical help also available on the same site.
They also sell C-more HMIs and other accessories, so this is probably the best place to look for an answer.
Hope this helps,
Daniel Chartier