This is a retail Dreamweaver UltraDev 4 Mac Upgrade. Note that this product requires a previous installation of Dreamweaver UltraDev to install this upgrade. This retail box includes two CDs- Dreamweaver UltraDev and Dreamweaver UltraDev 4. Two books are included and registration docs with serial numbers are also included. Both envelopes for CDs have serial numbers for the CDs.