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SanDisk Cruzer Blade 8 GB USB 2.0 USB flash drive Black SDCZ50-008G-B35
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A-Tech
A-Tech 8GB DDR4 2133MHz SODIMM 260-Pin for iMac 21.5 2017
8GB DDR4 2133MHz SODIMM upgrades compatible 21.5-inch iMac Mid 2017 systems
- Capacity8GB
- SpeedDDR4 2133 (PC4 17000)
- Voltage1.20V
- ECCNo
- Buffered/RegisteredUnbuffered
- Rank1Rx8
- 8GB DDR4 2133MHz boosts multitasking and speeds up loading times
- 260-pin SODIMM form factor fits the iMac 21.5 Mid 2017 slot exactly
- 20V low-voltage DDR4 reduces power draw and heat in the compact all-in-one
- Tested with Major Brand chips for reliable operation in Apple model iMac18,1 A1418 EMC 3068
- Non-ECC unbuffered 1Rx8 module installs easily for an immediate performance upgrade
8GB DDR4 2133MHz SODIMM for 21.5-inch iMac 2017
This 8GB module uses DDR4 2133MHz (PC4-17000) memory in a 260-pin SODIMM form factor. It runs at 1.20V and is unbuffered, non-ECC, single-rank 1Rx8. The stick is built with major-brand chips and contains no heat spreader. It is designed specifically for the Apple iMac (21.5-inch, Mid 2017) matching model ID iMac18,1 and order number MMQA2LL/A.
Who this suits and who should look elsewhere
It suits owners of the listed iMac who want to add or replace memory with a certified, tested module. It does not suit machines that require a different memory generation, pin count, voltage, ECC or registered operation, or a capacity other than 8GB per slot. Builders working on non-Apple platforms or newer Apple models should verify exact specifications before purchase.
The specification that decides fit
The decisive specification is the DDR4 2133MHz SODIMM 260-pin 1.20V unbuffered non-ECC 1Rx8 layout validated for iMac18,1 (A1418 EMC 3068). If your system demands a different speed, pin layout, voltage or error-correction type, this module will not work.
주요 특징
- 8GB DDR4 2133MHz boosts multitasking and speeds up loading times
- 260-pin SODIMM form factor fits the iMac 21.5 Mid 2017 slot exactly
- 20V low-voltage DDR4 reduces power draw and heat in the compact all-in-one
- Tested with Major Brand chips for reliable operation in Apple model iMac18,1 A1418 EMC 3068
- Non-ECC unbuffered 1Rx8 module installs easily for an immediate performance upgrade
사양
| Brand | A-Tech |
|---|---|
| Series | A-Tech DDR4 Apple Mac RAM Memory Upgrades |
| Capacity | 8GB |
| Speed | DDR4 2133 (PC4 17000) |
| Voltage | 1.20V |
| ECC | No |
| Buffered/Registered | Unbuffered |
| Rank | 1Rx8 |
| Chipset | Major Brand Chipset |
| Heat Spreader | No |
| Compatible System | Apple Mac Systems |
| Features | Major Brand Chips |
이 상품에 대한 질문
Does this 260-pin DDR4 SODIMM fit the 21.5-inch iMac from 2017?
Yes, it is built for the iMac 21.5 Mid 2017 (model iMac18,1, EMC 3068, order MMQA2LL/A) and uses the 260-pin SO-DIMM form factor that the system requires.
What is the correct way to seat the module so the Mac recognises the full 8 GB?
Power off and unplug the iMac, open the memory door, insert the module at a slight angle until the gold contacts disappear, then press down firmly until both side clips click into place.
Will the 1.20 V DDR4 chips need any firmware update or periodic re-seating over time?
No firmware update is required; the module is non-ECC unbuffered and validated for the iMac. Under normal use it stays seated and needs no maintenance.
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