power connector type?

I'm working on an electronics assignment and I need to figure what these connectors are so I can create a power cable. Or I would buy one also if I knew where to look.

Could you please help me? Thank You

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Take a look at some of the connectors made by Molex.

Looks like .1inch spaced headers, you'll find a bazillion different iterations of these types of connectors. The different types don't have proper names. You could use a general .1 inch header connection as long as there's no physical keying on the receptacle. A razor blade can often remove tabs and keys from different connectors.