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Computer Memory Solutions
Computer Memory Solutions CM2048642400SO 32GB (2x16GB) DDR4 2400 CL17 1.2V 2Rx8 SODIMM for iMac 21.5 4K 2017
A 32 GB DDR4 kit with two 16 GB SO-DIMM modules at 2400 MHz CL17 for the 21.5-inch 4K iMac from mid-2017
- Capacity32GB (2 x 16GB)
- Type260-Pin DDR4 SO-DIMM
- SpeedDDR4 2400 (PC4 19200)
- CAS LatencyCL17
- Timing17-17-17
- Voltage1.2V
- 32 GB dual-channel kit doubles usable memory for the 2017 iMac
- DDR4 2400 MHz speed matches the factory specification exactly
- CL17 timing with 1.2 V operation keeps power draw low
- 2Rx8 unbuffered non-ECC modules fit the 260-pin SO-DIMM slots
- Guaranteed compatible with the 21.5-inch 4K iMac MNDY2LL/A
System-Specific DDR4 SO-DIMM Kit
This 32 GB kit contains two 16 GB DDR4 SO-DIMM modules rated at 2400 MHz with CL17 timings and 1.2 V operation. It is built specifically for the Apple iMac 21.5-inch 4K Mid-2017 model MNDY2LL/A using a 260-pin unbuffered non-ECC design. The 2Rx8 rank configuration matches the original system requirements for reliable recognition.
Upgrade From Factory 8 GB or 16 GB
The Mid-2017 21.5-inch 4K iMac ships with 8 GB or 16 GB of soldered or slotted memory depending on configuration. Installing this 32 GB kit replaces the removable slots and raises total capacity to 32 GB or 40 GB when combined with any soldered memory. The jump is worthwhile for users running virtual machines, large photo libraries or 4K video timelines that exceed the original memory ceiling.
DDR4 SO-DIMM Slot and Capacity Limits
The iMac 21.5-inch 4K Mid-2017 provides two user-accessible SO-DIMM slots supporting a maximum of 64 GB across both sockets. This kit occupies both slots with 16 GB modules, leaving no room for further expansion without removing a stick. Buyers who want more than 32 GB total must purchase a 64 GB kit instead.
Punti di forza
- 32 GB dual-channel kit doubles usable memory for the 2017 iMac
- DDR4 2400 MHz speed matches the factory specification exactly
- CL17 timing with 1.2 V operation keeps power draw low
- 2Rx8 unbuffered non-ECC modules fit the 260-pin SO-DIMM slots
- Guaranteed compatible with the 21.5-inch 4K iMac MNDY2LL/A
Caratteristiche tecniche
| Brand | Computer Memory Solutions |
|---|---|
| Model | CM2048642400SO |
| Capacity | 32GB (2 x 16GB) |
| Type | 260-Pin DDR4 SO-DIMM |
| Speed | DDR4 2400 (PC4 19200) |
| CAS Latency | CL17 |
| Timing | 17-17-17 |
| Voltage | 1.2V |
| ECC | No |
| Buffered/Registered | Unbuffered |
| Rank | 2Rx8 |
| Chipset | Major Brand Chipset |
| Heat Spreader | No |
| Compatible System | Apple iMac "Core i5" 3.0 21.5-Inch (4K, Mid-2017) MNDY2LL/A |
| Package Content | 2 Memory RAM Sticks |
Domande su questo articolo
Does the 260-pin DDR4 SODIMM fit the memory slots in the 21.5-inch 4K iMac from mid-2017?
Yes, the 260-pin DDR4 SODIMM form factor matches the four SO-DIMM slots inside the 21.5-inch 4K iMac (Mid-2017) for a direct fit.
What is the correct way to seat both 16 GB sticks so the iMac recognises the full 32 GB?
Power off and unplug the iMac, remove the bottom access door, insert each module at an angle until the gold contacts disappear, then press down firmly until both side clips click into place.
Will the memory need any firmware updates or battery changes to keep working in this iMac?
No firmware updates or battery maintenance are required; the DDR4 modules run at 1.2 V without ECC and are covered by a limited lifetime warranty against manufacturing defects.
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