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

Computer Memory Solutions

Computer Memory Solutions 16GB DDR4 2400 SODIMM ThinkPad L390 CM2048642400SO

SKU CH-41SA-CB90B

16 GB DDR4 2400 SODIMM upgrades a ThinkPad L390 with CL17 timing at 1.2 V

  • Capacity16GB
  • Type260-Pin DDR4 SO-DIMM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Timing17-17-17
  • Voltage1.2V
  • 16 GB DDR4 2400 MHz SODIMM boosts ThinkPad L390 performance
  • CL17 latency and 1.2 V operation keep power draw low
  • 260-pin unbuffered non-ECC design fits the 20NRxxx slot exactly
  • Single 16 GB module leaves the second socket free for future expansion
  • Major-brand chipset and limited lifetime warranty back long-term reliability

System-Specific Upgrade for ThinkPad L390

This 16 GB DDR4 SO-DIMM is built for the Lenovo ThinkPad L390 20NRxxx series. It targets owners who need a single-module capacity increase without mixing kits. The unbuffered, non-ECC design matches the laptop's standard memory architecture.

Single-Module Kit Simplifies Installation

The package contains one 260-pin stick rated at 2400 MHz with CL17 timings at 1.2 V. Major-brand chips and factory testing by Computer Memory Solutions aim to eliminate the incompatibility risks that generic modules can introduce.

Straightforward Slot Insertion

Installation follows the usual SODIMM procedure: power off, open the access panel, align the keyed notch and press until the clips latch. The two-slot, 32 GB maximum means a second identical module can be added later if the first seat is already occupied.

Highlights

  • 16 GB DDR4 2400 MHz SODIMM boosts ThinkPad L390 performance
  • CL17 latency and 1.2 V operation keep power draw low
  • 260-pin unbuffered non-ECC design fits the 20NRxxx slot exactly
  • Single 16 GB module leaves the second socket free for future expansion
  • Major-brand chipset and limited lifetime warranty back long-term reliability

Specifications

BrandComputer Memory Solutions
ModelCM2048642400SO
Capacity16GB
Type260-Pin DDR4 SO-DIMM
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Timing17-17-17
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemLenovo ThinkPad L390 20NRxxx Series
Package Content1Memory Ram Stick

Questions about this item

Will the 260-pin DDR4 SODIMM need any firmware updates or heatsink additions during its service life?

No firmware updates apply to this memory module, and the specification lists no heat spreader, so none is required.

What limit appears first when the ThinkPad L390 runs sustained workloads with this 16 GB stick installed?

The system maximum of 32 GB across two sockets is reached before the single 16 GB module hits any density ceiling.

How much power does the 1.2 V unbuffered module draw and does it add audible fan noise under all-day operation?

It operates at the standard 1.2 V DDR4 voltage with no heat spreader, so thermal impact on the laptop’s cooling is minimal.

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