Hi
I don't think it is compatible. I checked the compatibility section in the datasheet for the 90w docking station:
HP 2012 Docking Stations and HP Advanced Docking Stations are compatible with HP ProBook b-Series Notebook PCs, HP EliteBook 8xxx p Series Notebook PCs, and HP EliteBook 8xxx w Series Mobile Workstations.
The specs for your mobile workstation list the HP 2013 UltraSlim Docking Station as compatible. However, according to some forum posts I found, it might take some doing to get that working.
I hope this helps. 