C13 to C14 power cables were needed to hook up to the PDU in the datacenter, we purchased C13s to UK Standard ones.
We currently have 4 on loan from the provider, but these need replacing with our own. We would need 6 for server redundant power, and 1 for the switch. Buying in bulk is better, so let's get an additional 3 to prevent having to purchase them again in a few months time.