507750-S21Option Part #: 507750-B21
HP 500GB 3G SATA 7.2K RPM 2.5" SFF Midline Hot Plug Hard Drive
Alternate Part #: 507750-S21
Spare Part #: 508035-001
Model #: MM0500EANCR, MM0500EBKAE
Assembly Part #: 507749-001, 614828-002* Please note that this model 507750-S21 is aggregated under HP option # 507750-B21 and HP spare # 508035-001. HP models that are acceptable substitutes include the following: MM0500EANCR, MM0500EBKAE, 507749-001, 614828-002. These are 100% identical to the product shown above.