That's the cable specifications that the cable supports. Meaning max. 10A at 125V. But your monitor is not running at 1250Watts. There should be a label near the PSU on your monitor on what the consumption is.
But as Bristow said, the cable is fine. It's a basic cable for those devices.
Intel Core i7 8700K | 32 GB DDR 4 PC 3200 | ROG STRIX Z370-F Gaming | RTX 3090 FE| Crappy Monitor| HTC Vive Pro :3