Hitachi G200 Hardware Reference Manual page 72

To remove an optical cable, push the top of the connector of the optical cable
(1) to release the latch and remove the SAS cable (2).
To remove a LAN cable, push the top of the LAN cable connector (1) to
release the latch and remove the LAN cable (2).
72 Maintaining the storage system
Hitachi Virtual Storage Platform G200 Hardware Reference Guide