From Amazon
Club 3D compatible DisplayPort 1.4 HBR3 8K60Hz Verlängerungskabel Stecker/Buchse - 2m
Scan
Club3D 200cm DP 1.4 (M) to DP (F) Extension Lead
Conrad Electronic
club3D DisplayPort Cable extension DisplayPort plug, DisplayPort socket 2.00 m Black CAC-1022 DisplayPort cable