WD19DCS is a simplified version of WD19DC without 3.5mm ports. Boost your PCâ€s power up to 210W on the worldâ€s most powerful and first modular Dual USB-C dock with a future-ready design. Includes a 240 Watt AC Power Adapter with up to 210 Watts power delivery. Up to 90 Watts power delivery to non-Dell systems. Important Compatibility Information for the Dell Performance Dock WD19DCS: Dell recommends the following systems for optimal compatibility: Precision 7530; Precision 7540; Precision 7730; Precision 7740. The following Dell systems are compatible via single connection on the Dell Performance Dock WD19DCS, functionality reduced to single USB-C, the same as the Dell Dock WD19: Latitude 3301; Latitude 3390 2-in-1; Latitude 3400; Latitude 3490; Latitude 3500; Latitude 3590; Latitude 5280; Latitude 5285; Latitude 5289; Latitude 5290; Latitude 5290 2-in-1; Latitude 5300; Latitude 5300 2-in-1; Latitude 5400; Latitude 5401; Latitude 5480; Latitude 5490; Latitude 5491; Latitude 5500; Latitude 5501; Latitude 5580; Latitude 5590; Latitude 5591; Latitude 7200 2-in-1; Latitude 7280; Latitude 7285; Latitude 7290; Latitude 7300;Latitude 7380; Latitude 389; Latitude 7390; Latitude 7390 2-in-1; Latitude 7400; Latitude 7400 2-in-1; Latitude 7480; Latitude 7490; Precision 3520; Precision 3530; Precision 3540; Precision 3541; Precision 5520; Precision 5530; Precision 5530 2-in-1; Precision 5540; Rugged 5420; Rugged 5424; Rugged 7424; XPS 9360; XPS 9365; XPS 9370; XPS 9380; XPS 9530; XPS 9560; XPS 9570; XPS 9575; Precision 7520; Precision 7720. Precision 7520 and 7720 require more power than 130W, so when docked with the Dell Dock WD19 (130W/180W) or Dell Thunderbolt Dock WD19TB, the workstation power adapter needs to be plugged in. For the best experience with Precision 7530/ 7540 or 7730/ 7740, choose the Dell Performance Dock WD19DCS which comes with a dual USB-C connector that provides up to 210W power delivery, so you no longer need an additional power adapter.