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Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.

Description

Lenovo 4X77A99752 32GB DDR5 ECC UDIMM Server Memory

Overview

The Lenovo 4X77A99752 is a 32GB DDR5 ECC UDIMM running at PC5-5600 (5600 MT/s) in a dual-rank (2RX8) configuration — the correct memory upgrade when you need to expand capacity in a Lenovo ThinkSystem server without stepping up to registered (RDIMM) modules. ECC (Error-Correcting Code) catches and corrects single-bit memory errors in real time, which matters in always-on workloads like video surveillance recording, database services, or virtualization hosts where a silent memory fault can corrupt data or crash a VM. The 2RX8 dual-rank layout provides higher effective bandwidth than a single-rank module of the same capacity, keeping throughput consistent under multi-threaded load.

Compatibility

This module is a Lenovo-qualified DDR5 UDIMM intended for ThinkSystem platforms that specify PC5-5600 unbuffered ECC memory. Verify your server's memory population rules before ordering — ThinkSystem platforms enforce channel-balanced population, and mixing ranks or speeds can force the entire memory subsystem to downclock. Always confirm the specific system's Hardware Maintenance Manual for validated DIMM configurations. Not compatible with systems requiring RDIMM, LRDIMM, or SO-DIMM form factors.

Installation Notes

Install into the correct DIMM slot order per your platform's population guide — most ThinkSystem configurations require slots to be filled in a specific sequence starting from the processor's first memory channel. Ground yourself with an ESD strap before handling; DDR5 modules are sensitive to electrostatic discharge. The module operates at DDR5 voltage (1.1V nominal); no manual voltage configuration is required. Confirm BIOS/UEFI firmware is at the recommended level for DDR5 5600 support before inserting.

Specifications
Overview: 32GB 2RX8 PC5-5600 ECC UDIMM
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Lenovo 32GB 2RX8 PC5-5600 ECC UDIMM - 4X77A99752

$1,647.99

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