All DS110x devices are "normally" powered through the power jack.
The power jack accepts "small" power connectors with 3.5mm diameter. Use APR-P0011, APR-P0012, or APR-P0013 power adaptor supplied by Tibbo or similar adaptor with 12VDC nominal output voltage. Adaptor current rating should be at least 500mA. On the power jack, the ground is "on the outside", as shown on the figure below.
There are also "alternative" ways of powering the devices. Click the links below to explore: