You need the Keyspan USB serial adapter – model# USA-19HS.  – You can purchase on by clicking on this link: Keyspan Adapter   You connect this to the 9-pin black PC downloading cable that came with you EDM. Be sure to load the drive on the CD that came with your Keyspan.

Keyspan is the only USB serial adapter we recommend with our PC cable, software, and equipment. DO NOT USE BELKIN; DYNEX; IO-GEAR, ETC. -THEY DO NOT WORK.