Order No.: CHN DPA5. Item No.: CHN DPA5. Model: CHN DPA5. CNH DPA5 Diagnostic Tool Adapter / CNH EST (Engineering Level) v9.9 / v9.5 / v8.6 — New Holland Electronic Service Tool. Note: There are three software versions available for selection: CNH 8.6, CNH 9.5, and CNH 9.9.