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Green circuit board with black memory chips and gold edge connector

Computer Memory Solutions

Computer Memory Solutions CM256644200SO 2GB DDR2 533MHz SODIMM Dell Latitude D420 memory upgrade

SKU CH-DE90-SAEGN

2GB DDR2 533MHz SODIMM module upgrades Dell Latitude D420 notebooks to 2.5GB maximum memory

  • Capacity2GB
  • Type200-Pin DDR2 SO-DIMM
  • SpeedDDR2 533 (PC2 4200)
  • CAS LatencyCL4
  • Timing4-4-4
  • Voltage1.8V
  • 2 GB capacity expands the Dell Latitude D420 to its 2.5 GB maximum
  • DDR2 533 MHz (PC2-4200) speed matches the notebook's memory bus
  • CL4 4-4-4 timing delivers responsive data access at 1.8 V
  • Single 200-pin SODIMM module fits the system's only memory slot
  • Backed by Computer Memory Solutions lifetime warranty for long-term reliability

CM256644200SO 2GB DDR2 SODIMM for Latitude D420

This module is a 2GB DDR2 533MHz SODIMM built to the PC2-4200 standard. It uses a 200-pin unbuffered non-ECC design with CL4 4-4-4 timings at 1.8V. The part is validated for the Dell Latitude D420 notebook.

Suitable for owners restoring

The part is validated for this model only and will not fit laptops that require a different pin count or voltage. Buyers who need more than 2GB of memory or a second module should look elsewhere because the system has one socket and a 2.5GB maximum.

200-pin DDR2 SO-DIMM interface

The 200-pin DDR2 SO-DIMM form factor is the single specification that decides fitment. If the target machine does not accept 200-pin DDR2 modules at 533MHz this upgrade will not work.

Helstu kostir

  • 2 GB capacity expands the Dell Latitude D420 to its 2.5 GB maximum
  • DDR2 533 MHz (PC2-4200) speed matches the notebook's memory bus
  • CL4 4-4-4 timing delivers responsive data access at 1.8 V
  • Single 200-pin SODIMM module fits the system's only memory slot
  • Backed by Computer Memory Solutions lifetime warranty for long-term reliability

Tæknilýsing

BrandComputer Memory Solutions
ModelCM256644200SO
Capacity2GB
Type200-Pin DDR2 SO-DIMM
SpeedDDR2 533 (PC2 4200)
CAS LatencyCL4
Timing4-4-4
Voltage1.8V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemDell Latitude D420 Notebook
Package Content1 Memory RAM Stick

Spurningar um þessa vöru

Will this 200-pin DDR2 SODIMM fit the single memory slot in a Dell Latitude D420?

Yes, it matches the 200-pin DDR2 SODIMM form factor used by the Latitude D420 and the system has one SODIMM socket.

What is the correct way to seat the module so the notebook recognises the full 2 GB?

Insert the stick at an angle until the gold contacts disappear, then press down firmly until both side clips click; the D420 will only show 2 GB when the module is fully locked.

When should the memory be replaced if the system becomes unstable?

Replace the module if the notebook fails to POST, shows repeated memory errors, or cannot maintain the rated 533 MHz CL4 4-4-4 timing at 1.8 V.

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