Incredibly powerful Thunderbolt dock delivers up to 210W introducing Dell's most powerful dock to date, The Dell Precision dual USB-C Thunderbolt dock - TB18DC for precision 7530 and 7730 workstations, offering incredibly high power delivery of up to 210W. Charge up to 80% of your precision 7530 or 7730 within an hour, and be fully charged in under two hours with Dell Express Charge. You'll be ready to move at a moment's notice with plenty of battery backing you up.