Lenovo 16GB 2666MHz DDR4 PC4-21300 ECC Unbuffered CL19 288-Pin DIMM 1.2V Dual Rank x8 Memory Module – 4ZC7A08699

Lenovo 16GB DDR4-2666 ECC Unbuffered DIMM — 4ZC7A08699

The Lenovo 4ZC7A08699 is a 16GB DDR4-2666 (PC4-21300) ECC Unbuffered DIMM operating at 1.2V with CL19 latency in a dual rank x8 configuration. Designed for Lenovo servers and workstations supporting DDR4-2666 ECC UDIMM, it delivers DDR4-2666 speed with ECC error correction for platforms requiring unbuffered ECC memory.

Key Features

• 16GB DDR4-2666 (PC4-21300) — ECC Unbuffered DIMM
• ECC (Error Correcting Code) — single-bit error detection and correction
• Unbuffered (UDIMM) — compatible with select server and workstation platforms
• Dual Rank x8
• 1.2V operating voltage
• CL19 latency
• 288-pin DIMM — standard DDR4 interface

Product Specifications

• Part Number: 4ZC7A08699
• Manufacturer: Lenovo
• OEM Status: OEM Lenovo
• Capacity: 16GB
• Speed: DDR4-2666 (PC4-21300)
• Type: ECC Unbuffered DIMM (ECC UDIMM)
• Form Factor: 288-Pin DIMM
• Voltage: 1.2V
• CAS Latency: CL19
• Rank: Dual Rank x8

Memory Specifications

• Capacity: 16GB
• DDR Generation: DDR4
• Speed: 2666MHz (PC4-21300)
• CAS Latency: CL19
• Voltage: 1.2V
• ECC: Yes
• Buffered: Unbuffered (UDIMM)
• Rank: Dual Rank x8
• Form Factor: 288-Pin DIMM

Performance Specifications

• Bandwidth: Up to 21,300 MB/s (PC4-21300)
• Operating Temperature: 0°C to 85°C

Use Cases

• ECC memory for Lenovo servers and workstations supporting DDR4-2666 ECC UDIMM
• Workstation platforms requiring ECC UDIMM at DDR4-2666
• Entry-level server memory with DDR4-2666 speed and ECC protection

Compatibility

• Lenovo servers and workstations supporting DDR4-2666 ECC UDIMM
• Not compatible with RDIMM-only server platforms
• Verify Lenovo compatibility matrix for specific system models

Frequently Asked Questions

What is the difference between 4ZC7A08699 and 01KR360?

4ZC7A08699 is a DDR4-2666 ECC UDIMM (Dual Rank x8) while 01KR360 is a DDR4-2666 ECC UDIMM (Dual Rank, chip width unspecified). Both are 16GB unbuffered ECC modules — verify exact specifications from Lenovo”s compatibility matrix.

What is the difference between ECC UDIMM and RDIMM?

ECC UDIMM provides error correction without a register chip, compatible with workstation and select server platforms. RDIMM uses a register for signal buffering and supports higher DIMM counts per channel. They are not interchangeable.

Is this compatible with non-Lenovo systems?

This is an OEM Lenovo module validated for Lenovo systems. Compatibility with non-Lenovo platforms is not guaranteed.

The Lenovo 4ZC7A08699 delivers 16GB of DDR4-2666 ECC Unbuffered server memory in a dual rank x8 configuration — validated for Lenovo servers and workstations requiring DDR4-2666 ECC UDIMM.