HP Power Cord 150304-010 is a replacement AC cable for connecting compatible equipment to mains power. This exact part is the Swiss regional version, with a C13 connector at the equipment end.
At 1.5 m long, the cable provides reach between the device and a nearby outlet. HP’s service guide lists it as a mandatory self-replacement power cable for the HP Digital Sender Flow 8500 fn2 Document Capture Workstation and HP ScanJet Enterprise Flow N9120 fn2 Document Scanner.