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Green printed circuit board with black memory chips gold edge connector 240 pins

OWC

OWC 2GB DDR3 1333 PC3-10600 CL9 240-pin 1.5V Non-ECC UDIMM for Lenovo ThinkCentre M58 M71e M77 M81 M90 M91

SKU CH-H2Q4-MF1RD

A 2 GB DDR3 1333 MHz UDIMM upgrade for compatible Lenovo ThinkCentre desktops

  • Capacity2GB
  • Type240-Pin DDR3 Non-ECC UDIMM
  • SpeedDDR3 1333 (PC3 10600)
  • CAS LatencyCL9
  • Voltage1.5V
  • ECCNo
  • Boost performance with a 2GB DDR3 1333 CL9 module
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Single-rank 1Rx8 unbuffered design at 1.5V
  • 240-pin UDIMM fits ThinkCentre M58 M71e M77 M81 M90 M91
  • Tested to meet or exceed OEM specifications

OWC 2GB DDR3 Module for ThinkCentre

This OWC module is a 2GB DDR3 1333 PC3-10600 CL9 240-pin 1.5V Non-ECC UDIMM. It is built for Lenovo ThinkCentre M58, M71e, M77, M81, M90, M90p and M91 desktops. The single-rank 1Rx8 design fits the standard unbuffered DIMM slots in those systems.

Suits owners of listed ThinkCentre models

It suits owners of the listed ThinkCentre desktops who want a straightforward capacity increase. It does not suit systems that require ECC or registered modules, or capacities larger than 2GB per slot. Builders working on platforms outside the named Lenovo series should verify their motherboard specifications first.

2GB single-module capacity is the deciding factor

The 2GB capacity per module is the specification that decides compatibility. Each stick delivers exactly 2GB at DDR3 1333 speeds with CL9 latency. Confirm your board accepts 2GB unbuffered non-ECC UDIMMs before purchasing.

Ciri-ciri utama

  • Boost performance with a 2GB DDR3 1333 CL9 module
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Single-rank 1Rx8 unbuffered design at 1.5V
  • 240-pin UDIMM fits ThinkCentre M58 M71e M77 M81 M90 M91
  • Tested to meet or exceed OEM specifications

Spesifikasi

BrandOWC
Part Number1U3D31R802GB
Capacity2GB
Type240-Pin DDR3 Non-ECC UDIMM
SpeedDDR3 1333 (PC3 10600)
CAS LatencyCL9
Voltage1.5V
ECCNo
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemLenovo ThinkCentre M58 Desktop
Lenovo ThinkCentre M71e Desktop
Lenovo ThinkCentre M77 Desktop
Lenovo ThinkCentre M81 Desktop
Lenovo ThinkCentre M90 Desktop

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Will the 240-pin DDR3 module fit the DIMM slots in my ThinkCentre M58, M71e, M77, M81, M90 or M91 desktop?

Yes, this 240-pin DDR3 UDIMM matches the standard desktop DIMM slot used across all listed ThinkCentre models.

What is the correct way to seat the 1Rx8 1.5V stick, and what step do people often miss?

Align the notch with the slot key, press down firmly until both side clips click, and verify the module sits level — the step most often missed is fully engaging both retention clips.

When should I consider replacing this 2GB PC3-10600 CL9 module?

Replace it if memory diagnostics report errors, if the system becomes unstable under load, or when you upgrade to a higher-capacity kit that requires matching speed and voltage.

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