Part
249491-B21
is compatible in the following Models:
HPE StorageWorks b2000 NAS
NAS B2000 (original version) - 292047-001
HPE StorageWorks NAS b2000 series v2
NAS B2000 (version 2, internal storage) - 322311-001
NAS B2000 (version 2, internal storage) - 322311-421
NAS B2000 (version 2, external storage) - 322312-001
NAS B2000 (version 2, external storage) - 322312-421