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Green rectangular circuit board with gold edge connector and black memory chips

OWC

OWC 4GB DDR3L 1600 CL11 1.35V SODIMM 204-pin 1Rx8 memory upgrade

SKU CH-6517-S62BA

A 4 GB DDR3L SODIMM running at 1600 MHz with CL11 latency and 1.35 V for compatible Lenovo ThinkPad notebooks

  • Capacity4GB
  • Type204-Pin DDR3L Non-ECC SODIMM
  • SpeedDDR3L 1600 (PC3L 12800)
  • CAS LatencyCL11
  • Voltage1.35V
  • ECCNo
  • Boosts multitasking with a 4GB DDR3L 1600 CL11 module
  • Low 1.35V operation reduces power draw and heat
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Tested compatible with ThinkPad E565 L440 L450 L460 L540
  • Simple DIY SODIMM install fits 204-pin slots

4GB DDR3L SODIMM for ThinkPad

This 4GB DDR3L 1600 CL11 module upgrades compatible Lenovo ThinkPad laptops including the E565, L440, L450, L460, L540, L560 and P40 Yoga. It targets owners of those specific models who need a single-slot memory increase for everyday multitasking and general productivity.

Installing the 204-pin SODIMM

Installation follows the standard SODIMM procedure: power off the laptop, remove the battery if accessible, open the memory door, align the notch on the 204-pin module with the slot key, press firmly until the side clips lock. The most common issue is incomplete seating, which causes the system to fail POST or show no added capacity; re-seat the module until both clips click.

4GB capacity and system headroom

A single 4GB stick raises total memory by that amount, letting the supported ThinkPads handle more browser tabs, office documents and light creative workloads without swapping. It runs out when workloads exceed the new total — large datasets, virtual machines or modern games will still pressure the system. Not for buyers who need more than one module or higher-density sticks.

Highlights

  • Boosts multitasking with a 4GB DDR3L 1600 CL11 module
  • Low 1.35V operation reduces power draw and heat
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Tested compatible with ThinkPad E565 L440 L450 L460 L540
  • Simple DIY SODIMM install fits 204-pin slots

Specifications

BrandOWC
Part Number1S6T31R804GB
Capacity4GB
Type204-Pin DDR3L Non-ECC SODIMM
SpeedDDR3L 1600 (PC3L 12800)
CAS LatencyCL11
Voltage1.35V
ECCNo
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemLenovo ThinkPad E565
Lenovo ThinkPad L440
Lenovo ThinkPad L450
Lenovo ThinkPad L460
Lenovo ThinkPad L540

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Questions about this item

How can I verify the module is running at 1600 MT/s with CL11 timing after installing it in my ThinkPad?

Enter the BIOS or UEFI setup on the ThinkPad and check the memory information screen; it should report DDR3L 1600 and CAS latency 11 for the installed module.

What comes in the package and is any additional hardware required for installation?

The box contains one 4GB DDR3L 1600 CL11 1.35V 204-pin SODIMM module; no extra parts or tools are needed for a standard ThinkPad memory slot installation.

Which capacity and speed should I choose for a ThinkPad L440 or L450 upgrade?

This module provides 4GB at DDR3L 1600 (PC3L-12800) and matches the voltage and form factor specified for the L440 and L450 models listed.

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