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Green circuit board with black memory chips and gold edge connector

OWC

OWC 16GB DDR5 4800 CL40 262-pin SODIMM laptop RAM

SKU CH-4MZ6-EXPHH

Adds 16 GB of DDR5 4800 CL40 memory to laptops, all-in-ones or NAS systems using a 262-pin SODIMM slot at 1.1 V

  • Total capacity16 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeUnbuffered
  • Recommended forLaptops, All-in-One Systems, and NAS Systems
  • 16 GB DDR5 module doubles laptop memory capacity
  • 4800 MT/s DDR5 speed raises data throughput for demanding tasks
  • CL40 latency at 1.1 V balances responsiveness with low power draw
  • 262-pin SODIMM form factor fits laptops, all-in-ones and NAS units
  • JEDEC and RoHS compliant for warranty-safe upgrades

16 GB DDR5 4800 SODIMM for laptops and NAS

This 16 GB DDR5 4800 CL40 module uses the 262-pin SO-DIMM form factor and runs at 1.1 V. It is built to JEDEC PC5-38400 specifications and is unbuffered non-ECC. The part is designed as a direct replacement for Kingston KVR48S40BS8-16 in laptops, all-in-one PCs and compatible NAS units.

Upgrade from lower-capacity or slower DDR5 modules

Adding this 16 GB stick increases total memory bandwidth at the standard 4800 MT/s rate and CL40 latency. The jump is worthwhile when the system has an empty SO-DIMM slot or when replacing a smaller module to reach a higher total capacity supported by the platform. No higher-speed or lower-latency figures are claimed for this part.

Suits DIY upgraders needing JEDEC-standard DDR5

Buyers who want a warranty-safe, standards-compliant 16 GB DDR5 4800 module for a compatible laptop, all-in-one or NAS will find this part matches the required specifications. Systems that require ECC, registered DIMMs, a different pin count, a different voltage or speeds above 4800 MT/s should look at other modules.

How it compares

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

Price $192.99
Pricier than about 78% of the 2,079 comparable items (median $70.99).
Total capacity 16 GB
Typical for this category: the median of 1,886 items is 16 GB.
Price per GB $12.06 per GB
Pricier than about 88% of the 1,886 comparable items (median $5.94 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number4S8D51R816 GB
Total capacity16 GB
Product type262-Pin DDR5 SO-DIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Recommended forLaptops, All-in-One Systems, and NAS Systems

Questions about this item

Will this 262-pin DDR5 SODIMM fit my laptop's memory slot?

Yes, the module uses the standard 262-pin DDR5 SO-DIMM form factor used in current laptops, all-in-one systems and compatible NAS units.

What is the correct way to seat the module so it locks in place?

Align the notch with the slot key, insert the stick at a slight angle, then press down firmly until both side clips click; the step people miss is pressing evenly on both ends until the clips engage.

Does this 1.1 V DDR5 module need any firmware updates or periodic re-seating over time?

No firmware is required; the JEDEC-standard 1.1 V operation is handled by the system BIOS, and the module is designed to remain seated for the life of the device.

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