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A-Tech

A-Tech 4GB DDR4 2400MHz CL17 260-Pin SODIMM Laptop RAM HP 854915-001 Y7B55AA Z4Y84AA Z9H55AA Z9H55AT

SKU CH-HV34-88ENK

4GB DDR4 2400MHz CL17 SODIMM laptop memory upgrade using major-brand chips at 1.2V for compatible HP systems

  • Total capacity4 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forAMD & Intel Compatible
  • Boosts laptop responsiveness with a 4 GB DDR4 2400 MHz module
  • Standard 1.2 V DDR4 voltage keeps power draw low
  • 260-pin SO-DIMM form factor fits compatible HP laptop slots
  • CL17 latency and unbuffered design deliver reliable everyday performance
  • Rigorously tested with major-brand chips for dependable operation

4GB DDR4 2400MHz SODIMM Upgrade

This 4GB DDR4 260-pin SODIMM module operates at 2400MHz with a CL17 latency and 1.20V voltage. It is an unbuffered, non-ECC memory upgrade built with major brand chips for laptop, notebook and all-in-one systems.

For single-slot capacity boosts

The single 4GB stick suits owners of compatible HP platforms such as 854915-001, Y7B55AA, Z4Y84AA, Z9H55AA and Z9H55AT who need a straightforward capacity increase. Builders requiring larger single-module densities, ECC error correction or registered buffering should consider other options.

260-pin DDR4 SO-DIMM form factor

The module uses the 260-pin DDR4 SO-DIMM interface, which determines whether it physically fits and electrically functions in the target notebook. Verify the system's supported memory specification before purchase to ensure compatibility.

How it compares

Measured against everything we stock in Laptop RAM, at today’s prices. Recalculated every night.

Price $29.99
Cheaper than about 74% of the 2,079 comparable items (median $70.99).
Total capacity 4 GB
Lower than about 80% of the 1,886 comparable items (median 16 GB).
Price per GB $7.50 per GB
Pricier than about 65% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity4 GB
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.2 V
Compatibility
Recommended forAMD & Intel Compatible

Questions about this item

Does the 260-pin DDR4 SO-DIMM fit a standard laptop memory slot?

Yes, it matches the standard 260-pin DDR4 SO-DIMM form factor used in compatible laptops, notebooks and all-in-one systems.

How do I install the 260-pin module and what step is often missed?

Align the notch on the gold edge with the slot key, insert the module, then press down evenly until the side retention clips snap into the notches on both sides.

Will the 1.20V CL17 module need any future maintenance or replacement?

No scheduled maintenance is required; the module is tested for reliability and covered by a lifetime warranty if a fault ever develops.

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