According to the manufacturer's website, this docking station is officially compatible with the HP EliteBook 8530p. This model A7E32AA comes with a 90W power supply. However, it is also available with a slot for an additional drive and 230W power supply (model A7E38AA):
HP Pro Docking (DisplayPort, VGA, DVI-D, USB 2.0, USB 3.0, LAN/RJ45)