A:Answer Precision 7000 series mobile workstations require more power than 130W, so when docked with the Dell Dock WD19 (130W/180W) or Dell Thunderbolt Dock WD19TB, the workstations need to be plugged in externally for optimal operation. For the best experience with Precision 7530 , choose the Dell Performance Dock WD19DC. The WD19DC dock comes with a dual USB-C connector that provides up to 210W of power delivery, so you no longer need an additional power adapter.