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Two green circuit boards with gold edge connectors and black memory chips

OWC

OWC 64GB (2x32GB) DDR4 2400 ECC Registered RDIMM Cisco HX220c M4 HX240c M4

SKU CH-P7T1-P3KN4

64 GB DDR4 2400 ECC registered RDIMM kit for Cisco HX220c M4 and HX240c M4 servers

  • Capacity64GB (2 x 32GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.2V
  • ECCYes

Capacity 64GB (2 x 32GB)

  • ECC registered design protects data integrity in servers
  • 64GB kit with two 32GB modules expands capacity
  • DDR4 2400 CL17 speed matches system requirements
  • 2V operation reduces power draw
  • Qualified for Cisco HX220c M4 and HX240c M4

Server ECC RDIMM kit

This 64 GB kit contains two 32 GB DDR4 2400 ECC registered RDIMMs built for the Cisco HX220c M4 and HX240c M4. It targets administrators upgrading those specific servers or compatible workstations and NAS systems that require registered ECC memory. The modules will not work in standard desktop platforms or alongside unbuffered or load-reduced DIMMs.

Capacity and headroom

Each module delivers 32 GB at 2400 MT/s with CL17 latency and 1.2 V operation, giving a total of 64 GB per two-slot pair. This density suits virtualisation hosts, database nodes and memory-heavy analytics workloads on the supported Cisco platforms. The registered buffer adds electrical load that limits maximum DIMM count per channel, so total system capacity depends on the server's memory architecture.

DDR4 2400 registered interface

The PC4-19200 interface runs at 2400 MT/s with a registered clock driver that stabilises signalling at higher densities. Bandwidth scales with populated channels, but the registered protocol introduces one extra cycle of latency compared with unbuffered DDR4. JEDEC-compliant timing and 1.2 V operation keep power draw predictable within the server's thermal envelope.

Highlights

  • ECC registered design protects data integrity in servers
  • 64GB kit with two 32GB modules expands capacity
  • DDR4 2400 CL17 speed matches system requirements
  • 2V operation reduces power draw
  • Qualified for Cisco HX220c M4 and HX240c M4

Specifications

BrandOWC
Part Number2R4D42R4064P
Capacity64GB (2 x 32GB)
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemCisco HX220c M4
Cisco HX240c M4

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Questions about this item

Can I add these 2Rx4 registered DIMMs to existing memory in my Cisco HX220c M4?

Yes, they install in the server's DDR4 slots, but do not mix them with unbuffered or load-reduced modules because the registered design requires matching memory types.

How can I confirm the kit is running at 2400 MT/s with CL17 after installation?

Check the BIOS memory information or a tool like dmidecode; each 32 GB module should report 2400 MT/s, PC4-19200 speed and CAS latency 17 at 1.2 V.

Does the upgrade kit include anything besides the two 32 GB RDIMMs?

No, the package contains only the two 288-pin DDR4 ECC registered modules; no heat spreaders, cables or extra hardware are supplied.

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