Samsung · Server memory
M386A4G40DM0-CPB
32 GB DDR4-2133 ECC Load-Reduced DIMM (LRDIMM), quad-rank ×4. Sold by Cisco and HPE under their own part numbers, all cross-referenced below.
Specifications JEDEC / manufacturer data
| Memory type | DDR4 | 2 sources |
| Module type | LRDIMM · ECC Load-Reduced DIMM | 2 sources |
| Capacity | 32 GB | 2 sources |
| Speed | DDR4-2133 · PC4-17064 | 2 sources |
| Organization / rank | 4Rx4 | 3 sources |
| Voltage | 1.2 V | JEDEC standard for DDR4 |
| Form factor | 288-pin DIMM | standard for DDR4 LRDIMM |
OEM part numbers same module, OEM-branded
| Vendor | OEM part number | Verification |
|---|
| Cisco | 15-102217-01 | catalog |
| HPE | 752372-081 | ✓ verified |
| HPE | 726722-B21 | ✓ verified |
OEM cross-references are compiled from distributor cross-reference data and OEM documentation. Verify against your vendor's parts list before ordering.
Compatible alternatives same JEDEC specification
| Manufacturer | Part number | Spec |
|---|
| SK hynix | HMA84GL7MMR4N-TF | 32 GB · DDR4-2133 · LRDIMM · 4Rx4 |
Modules match on all key specifications (type, form factor, capacity, speed, rank organization) and are generally interchangeable in servers that accept this spec.
Interchangeability is based on matching JEDEC specifications, not per-server testing. Confirm against your server vendor's qualified parts list.
View the full family →
Frequently asked
Is Cisco 15-102217-01 the same module as M386A4G40DM0-CPB?
Yes. Cisco resells this Samsung module under part number 15-102217-01; HPE does the same as 752372-081, HPE does the same as 726722-B21. The physical module is identical: OEM part numbers are branding, not different hardware.
Can I use a SK hynix module instead?
In most servers, yes: HMA84GL7MMR4N-TF (SK hynix) match this module on every key specification (32 GB, DDR4-2133, LRDIMM, 4Rx4). Keep vendors consistent within a memory bank, and check your server's qualified parts list for edge cases.
What does 4Rx4 mean?
4 ranks of DRAM chips, each 4 bits wide ("×4"). Rank organization affects how many modules a memory controller can drive at full speed, so it's listed as a key spec.