The “Notch” That Matters: The Ultimate Guide to IEC C13 vs. C15 Power Cords Imagine this scenario: You’ve just invested in a high-performance Cisco Catalyst switch or a new rack-mounted server for your office data centre. You unbox the hardware, slide it into the rack, and reach for a standard power cable to plug it into your PDU. But it doesn't fit. You try to push it in, but...