C13 = The designation for a "kettle" style of end connector on a cable (for Elo, this would be the AC power cable that plugs into a power brick or monitor). That's why it's essential to understand the most common power cord types used in data centers: C13, C14, C19, and C20. In this guide, we'll compare their differences, share a clear power cord types chart, and explain how choosing the right cords improves safety, efficiency, and uptime. It conforms to the IEC 60320 standard, which defines international configurations for power connectors. The C13 side is the female connector that connects to the. The codes in Box 7 of your Form 1099-R indicate the type of distribution you received.