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Catalog/Samsung/DDR4 LRDIMM/M386A4K40BB0-CRC
Samsung · Server memory

M386A4K40BB0-CRC

Verified

32 GB DDR4-2400 ECC Load-Reduced DIMM (LRDIMM), dual-rank ×4. Sold by Supermicro and Dell under their own part numbers, all cross-referenced below.

independent sources How we verify →
Specifications JEDEC / manufacturer data
Memory typeDDR4datasheet + 5 more
Module typeLRDIMM · ECC Load-Reduced DIMMdatasheet + 5 more
Capacity32 GB6 sources
SpeedDDR4-2400 · PC4-19200datasheet + 5 more
Organization / rank2Rx46 sources
CAS latency175 sources
Voltage1.2 VJEDEC standard for DDR4
Form factor288-pin DIMMstandard for DDR4 LRDIMM
OEM part numbers same module, OEM-branded
VendorOEM part numberVerification
SupermicroMEM-DR432L-SL02-LR24✓ verified
DellA8711889✓ verified
OEM cross-references are compiled from distributor cross-reference data and OEM documentation. Verify against your vendor's parts list before ordering.
Fits these servers 35 of 92 platforms
Spec match covers every DDR4 LRDIMM platform we track, so the spec-match rows above are a sample across vendors: 57 further platforms also match this module on spec. A server missing from this table is not a compatibility limit. Browse all servers →
Confirmed = listed in the vendor's memory documentation for that server. Vendor match = the vendor's own part cross-reference matches this module and its speed is validated for the platform; the module is not taken from that server's memory list. Spec match = this module meets the platform's JEDEC requirements (generation, form factor, validated speed); interchangeability is spec-based, not per-server testing. Confirm against your server's qualified parts list before ordering.
Compatible alternatives any brand · same JEDEC specification
ManufacturerPart numberSpec
MicronMTA36ASF4G72LZ-2G332 GB · DDR4-2400 · LRDIMM · 2Rx4
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 Supermicro MEM-DR432L-SL02-LR24 the same module as M386A4K40BB0-CRC?
Yes. Supermicro resells this Samsung module under part number MEM-DR432L-SL02-LR24; Dell does the same as A8711889. The physical module is identical: OEM part numbers are branding, not different hardware.
Can I use a Micron module instead?
In most servers, yes: MTA36ASF4G72LZ-2G3 (Micron) match this module on every key specification (32 GB, DDR4-2400, LRDIMM, 2Rx4). Keep vendors consistent within a memory bank, and check your server's qualified parts list for edge cases.
What servers take M386A4K40BB0-CRC?
Dell PowerEdge C6420, Dell PowerEdge FC640, Dell PowerEdge M640, Dell PowerEdge MX740c, among others, match it through the vendor's own part cross-reference (e.g. Supermicro MEM-DR432L-SL02-LR24) with a validated speed. Other DDR4 LRDIMM platforms generally accept it too; verify against the server's qualified parts list.