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قائمة الرصد تسجيل الدخول
Green printed circuit board with black memory chips and gold edge connector

Computer Memory Solutions

Computer Memory Solutions 4GB DDR3 1333 SO-DIMM Apple MacBook Pro Core i5 2.4 13.3 MD313LL/A A1278

SKU CH-5BAS-XNH42

A 4 GB DDR3 1333 SO-DIMM module built for the 13.3" MacBook Pro (Core i5 2.4, Late 2011, A1278)

  • Capacity4GB
  • Type204-Pin DDR3 SO-DIMM
  • SpeedDDR3 1333 (PC3 10600)
  • CAS LatencyCL7
  • Timing7-7-7
  • Voltage1.5V
  • 4GB DDR3 module upgrades a Late 2011 MacBook Pro 13.3
  • CL7 timing at 1333 MHz delivers responsive multitasking
  • 5 V unbuffered design matches factory power requirements
  • 204-pin SO-DIMM fits the MD313LL/A slot exactly
  • Major-brand chips backed by CMS lifetime warranty

Apple MacBook Pro 13.3" Late 2011 memory

This 4 GB DDR3 SO-DIMM is built specifically for the Apple MacBook Pro "Core i5" 2.4 13.3" MD313LL/A A1278. It installs directly into the 204-pin slot without configuration changes. The module is new and covered by the manufacturer's lifetime warranty when purchased from Computer Memory Solutions.

Suitable for single-slot upgrades on this model

Owners of the identified MacBook Pro can add one 4 GB stick to reach higher total memory. Systems that require ECC, registered buffers, a different pin count or a voltage other than 1.5 V cannot use this module. Buyers needing more than one stick should verify the two-socket limit before ordering.

204-pin DDR3 1333 MHz CL7 specification

The decisive spec is the 204-pin DDR3 1333 (PC3-10600) interface with CL7 timing at 1.5 V unbuffered. Only MacBook Pro models matching MD313LL/A and A1278 accept this exact combination. Any other pin layout, speed grade or voltage will prevent installation.

أبرز المميزات

  • 4GB DDR3 module upgrades a Late 2011 MacBook Pro 13.3
  • CL7 timing at 1333 MHz delivers responsive multitasking
  • 5 V unbuffered design matches factory power requirements
  • 204-pin SO-DIMM fits the MD313LL/A slot exactly
  • Major-brand chips backed by CMS lifetime warranty

المواصفات

BrandComputer Memory Solutions
ModelCM5126410600SODRH
Capacity4GB
Type204-Pin DDR3 SO-DIMM
SpeedDDR3 1333 (PC3 10600)
CAS LatencyCL7
Timing7-7-7
Voltage1.5V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemApple Macbook Pro "Core I5" 2.4 13.3" Md313Ll/A A1278
Package Content1 Memory RAM Stick

أسئلة حول هذا المنتج

How do I install the 204-pin DDR3 SO-DIMM in the MacBook Pro 13.3" Late 2011, and what step do people often miss?

Remove the bottom case, release the side clips, insert the module at an angle until the gold contacts are hidden, then press down firmly until both clips click — the step most people miss is pressing hard enough to seat it fully.

Will this 4GB DDR3 1333 module need any maintenance or replacement during the laptop's life?

No routine maintenance is required; the unbuffered non-ECC stick has no moving parts or heat spreader, so it either works for the system's lifetime or is replaced only if a fault appears.

What is the first limit reached when the MacBook Pro 13.3" MD313LL/A runs sustained workloads with this memory installed?

The machine's two-slot architecture caps total memory at 16GB, so capacity is the first constraint — this single 4GB module leaves one slot open for a future upgrade.

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