Description in English:
Cable Kit Oculink 2U 4 port Switch Card for Riser 1 or 2 to Middle Drive Bay. Connects 4x NVMe drives.

2U 4 port Switch accessory cable kit, Riser 2 or Riser 3 (1 cable included). Contains the following OCuLink bundled cable:
875mm long, bundled cable kit (1 cable included) straight OCuLink SFF-8611 connectors to straight/right angle OCuLink SFF-8611 connectors
Used in the R2208+8 to connect switch AIC to HSBP PCIe SSD ports (SSD ports depend on installed location of the switch AIC)