The TI board TMDSDOCK28335 can be powered by the USB or an external power supply. If an external supply is used, here are the specs required for the supply, 5V, >=1A, and the barrel type is a positive center with the dimensions 2.5mm inside diameter x 5.5mm outside diameter.
One adapter option is 1939-1495-ND. “The input blades are sold separately”
The North America blade is 1939-1106-ND
Other 5V , >=1Amp power adapter options https://www.digikey.com/short/zd3w1m