A dial can be used to select one of four charging modes on Anker's new desktop Prime Charger. | Image: Anker Anker announced several additions to the company's Prime line of chargers today, including a new desktop version that allows the power output of its six USB ports to be customized through a control dial. As a result, connected devices get exactly as much power as they need.The new $169.99 Anker Prime Charger shares 250W of power across four USB-C ports and two USB-A ports. The first USB-C port can deliver up to 140W of power, while the other three max out at 100W. The two USB-A ports deliver up to 22.5W each. Image: Anker An LCD screen shows the power output of each USB-C port. The charger offers four different power distribution modes, adjustable through a built-in control dial or Anker's mobile app.