HP SmartArray P212 disabled, cache module not attached

hp cache status problem detected p212 in slot 5   Dan hpe 5945 2slot switch

physicaldrive 2I:1:5 Array D Cache Status Details: Cache disabled; ADG enabler missing Cache Disable

Item Description 5 Cache module P721m components For LED locations and status, see P721m LEDs PAGE 15 Item NOTE: For 4 addition HDs in 5-8 slots NOTE: OpticalDVD cannot be used with NOTE: Supported on HP Smart Array P212 Controller and HP Smart Array P410i

jinda slot Action: Replace the Cache Module but we already change the cache module e after get the same problem change the full controller   4 Port 2I 5 Cache module (also known as array The LEDs are duplicated on the reverse side of the cache module to facilitate status