2x Crucial 4GB DDR4-2666 ECC Registered Server RAM – CT4G4RFS8266.9FE1 | 8GB Total | PC4-21300 | 1.2V RDIMM

This listing is for two (2) Crucial 4GB DDR4 ECC Registered server memory modules — model CT4G4RFS8266.9FE1 — for a total of 8GB. These are RDIMM (Registered DIMM) modules designed for compatibility with servers and workstations that support ECC Registered DDR4 memory.

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📦 Condition:

• Used and in excellent working condition

• Pulled from a functioning server and tested for stability

• Clean contacts, no damage

• Ships in anti-static packaging

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⚙️ Specifications:

• Brand: Crucial (Micron)

• Model: CT4G4RFS8266.9FE1

• Capacity: 4GB per stick (8GB total)

• Type: DDR4 ECC Registered (RDIMM)

• Speed: DDR4-2666 MT/s (PC4-21300)

• Form Factor: 288-pin DIMM

• Voltage: 1.2V

• ECC: Yes

• Buffered/Registered: Yes

• Rank: Single Rank x8

• CAS Latency: CL19 (typical for this module)

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✅ Ideal For:

• Server or workstation memory upgrades

• Systems requiring ECC Registered DDR4 memory

• IT professionals or home lab builders

• Reliable performance in data-sensitive environments

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❗ Compatibility Note:

This is ECC Registered DDR4 memory (RDIMM). It is not compatible with desktops or systems that require unbuffered or non-ECC RAM. Please verify your system’s compatibility before purchase.