The connector with three horizontal pins (left) is an IEC C13 connector, which plugs into an appliance.
The connector with three round pins (right) is a BS 1363 plug (Type G), used in the UK and several other countries, including Uganda.
This cable is rated for up to 250V and 13A, providing a reliable power connection.
It is typically used for desktop computers, printers, and some other electrical appliances.