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Type: DDR4 » Special Offers: Free US Shipping

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64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-Pin SO-DIMM Memory Upgrade Kit

Memory upgrade kit for iMac (2019-2020) and Mac mini (2018) models and PCs which utilize PC4-21300 SO-DIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2666DDR4S64P
OWC SKU: OWC2666DDR4S64P

64.0GB (4 x 16GB) OWC 2666MHz DDR4 PC4-21300 260-Pin SO-DIMM Memory Upgrade Kit

Memory upgrade kit for iMac (2019-2020) and Mac mini (2018) models and PCs which utilize PC4-21300 SO-DIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2666DDR4S64S
OWC SKU: OWC2666DDR4S64S

128.0GB (4 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-Pin SO-DIMM Memory Upgrade Kit

Memory upgrade kit for 27" iMac w/ Retina 5K (2019-2020) and PCs which utilize PC4-21300 SO-DIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2666DR4S128S
OWC SKU: OWC2666DR4S128S

64.0GB (4 x 16GB) OWC PC4-19200 DDR4 2400MHz 260-Pin CL17 SO-DIMM Memory Upgrade Kit

For 27-inch iMac w/ Retina 5K (Mid 2017) and PCs that utilize PC4-19200 SO-DIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2400DDR4S64S
OWC SKU: OWC2400DDR4S64S

64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-Pin CL17 SO-DIMM Memory Upgrade Kit for 21.5" iMac with Retina 4K Display (2019)

For 21.5" iMac with Retina 4K Display (2019) complete with screen adhesive and all required installation tools. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2621DDR4S64K
OWC SKU: OWC2621DDR4S64K

64.0GB (2 x 32GB) 2400MHz DDR4 PC4-19200 SO-DIMM 260 Pin CL17 Memory Upgrade Kit w/ Installation Tools

Complete memory upgrade kit with all required installation tools for 21.5" iMac w/ Retina 4K (Mid 2017). *NOT compatible with 27" or 21.5" non-Retina* Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2421DDR4S64K
OWC SKU: OWC2421DDR4S64K

128.0GB (4 x 32GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R3M128
OWC SKU: OWC2933R3M128

96.0GB (6 x 16GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R1M96
OWC SKU: OWC2933R1M96

128.0GB (2 x 64GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R6M128
OWC SKU: OWC2933R6M128

192.0GB (6 x 32GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R3M192
OWC SKU: OWC2933R3M192

64.0GB (2 x 32GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R3M64
OWC SKU: OWC2933R3M64

64.0GB (2 x 32GB) 2400MHz DDR4 PC4-19200 SO-DIMM 260 Pin CL17 Memory Upgrade Kit

Memory upgrade kit for 21.5" and 27" iMac Retina models (Mid 2017), Mac mini (Late 2018), and PCs that utilize PC4-19200 SO-DIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2400DDR4S64P
OWC SKU: OWC2400DDR4S64P

384.0GB (6x 64GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R6M384
OWC SKU: OWC2933R6M384

256.0GB (4 x 64GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R6M256
OWC SKU: OWC2933R6M256

48.0GB (6 x 8GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R8M48
OWC SKU: OWC2933R8M48

128.0GB (8 x 16GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R1M128
OWC SKU: OWC2933R1M128

64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 260-Pin CL17 SO-DIMM Memory Upgrade Kit for 21.5" iMac with Retina 4K Display (2019)

For 21.5" iMac with Retina 4K Display (2019). Includes adhesive for resealing the display. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2621DDR4S64P
OWC SKU: OWC2621DDR4S64P

768.0GB (12 x 64GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R6M768
OWC SKU: OWC2933R6M768

512.0GB (8x 64GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R6M512
OWC SKU: OWC2933R6M512

384.0GB (12 x 32GB) OWC 2666MHz DDR4 PC4-21300 ECC 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) 8-Core models and other systems that utilize PC4-21300 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2666R3M384
OWC SKU: OWC2666R3M384

128.0GB (8 x 16GB) OWC 2666MHz DDR4 PC4-21300 ECC 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) 8-Core models and other systems that utilize PC4-21300 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2666R1M128
OWC SKU: OWC2666R1M128

64.0GB (4 x 16GB) OWC 2666MHz DDR4 PC4-21300 ECC 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) 8-Core models and other systems that utilize PC4-21300 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2666R1M64
OWC SKU: OWC2666R1M64

32.0GB (4 x 8GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R8M32
OWC SKU: OWC2933R8M32

Limited Quantity

256.0GB (4 x 64GB) 2666MHz DDR4 LRDIMM PC4-21300 288-pin CL19 Memory Upgrade Kit for iMac Pro

Memory upgrade kit for iMac Pro (2017). Includes screen adhesive. **Requires Professional Installation** Lifetime OWC Limited Warranty.

Limited Quantity, Only 4 Left!
In Stock: Ships Same Day!

Mfr P/N: DID2627DS256
OWC SKU: OWCDID2627DS256

96.0GB (2 x 32GB + 2 x 16GB) OWC 2666MHz DDR4 PC4-21300 260-Pin SO-DIMM Memory Upgrade Kit

Memory upgrade kit for 27" iMac w/ Retina 5K (2019-2020) and PCs which utilize PC4-21300 SO-DIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2666DDR4S96S
OWC SKU: OWC2666DDR4S96S

64.0GB (2 x 32GB) 2400MHz DDR4 PC4-19200 SO-DIMM 260 Pin CL17 Memory Upgrade Kit

Memory upgrade kit with screen adhesive for 21.5" iMac w/ Retina 4K (Mid 2017). *NOT compatible with 27" or 21.5" non-Retina* Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2421DDR4S64P
OWC SKU: OWC2421DDR4S64P

Limited Quantity

(*) 128.0GB OWC 2666MHz DDR4 PC4-21300 ECC 288-Pin LRDIMM Memory Module

For Mac Pro (2019) models and other systems that utilize PC4-23400 LRDIMM. *Used, OWC Tested* 1 Year OWC Limited Warranty.

Limited Quantity, Only 2 Left!
In Stock: Ships Same Day!

Mfr P/N: 2666D4LR128G
OWC SKU: OWC2666D4LR128U

512GB (4 x 128GB) OWC PC23400 DDR4 ECC 2933MHz 288-pin LRDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 LRDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933L2M512
OWC SKU: OWC2933L2M512

Limited Quantity

(*) 256GB (2 x 128GB) OWC PC23400 DDR4 ECC 2933MHz 288-pin LRDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 LRDIMM. Lifetime OWC Limited Warranty.

Limited Quantity, Only 1 Left!
In Stock: Ships Same Day!

Mfr P/N: 2933L2M256
OWC SKU: OWC2933L2M256

64.0GB OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Module

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933D4MP64G
OWC SKU: OWC2933D4MP64G

512GB (4 x 128GB) OWC PC21300 DDR4 ECC-R 2666MHz 288-pin LRDIMM memory upgrade kit

For iMac Pro. Includes screen adhesive. **Requires Professional Installation** Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: DID2627DS512
OWC SKU: OWCDID2627DS512

384.0GB (3 x 128GB) OWC PC21300 DDR4 2666MHz ECC Registered 288-pin LRDIMM Memory Upgrade Kit

For iMac Pro. Includes screen adhesive. **Requires Professional Installation** Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: DID2627DS384
OWC SKU: OWCDID2627DS384

192.0GB (12 x 16GB) OWC 2666MHz DDR4 PC4-21300 ECC 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) 8-Core models and other systems that utilize PC4-21300 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2666R1M192
OWC SKU: OWC2666R1M192

256.0GB (8 x 32GB) OWC 2666MHz DDR4 PC4-21300 ECC 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) 8-Core models and other systems that utilize PC4-21300 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2666R3M256
OWC SKU: OWC2666R3M256

192.0GB (6 x 32GB) OWC 2666MHz DDR4 PC4-21300 ECC 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) 8-Core models and other systems that utilize PC4-21300 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2666R3M192
OWC SKU: OWC2666R3M192

128.0GB (4 x 32GB) OWC 2666MHz DDR4 PC4-21300 ECC 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) 8-Core models and other systems that utilize PC4-21300 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2666R3M128
OWC SKU: OWC2666R3M128

96.0GB (6 x 16GB) OWC 2666MHz DDR4 PC4-21300 ECC 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) 8-Core models and other systems that utilize PC4-21300 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2666R1M96
OWC SKU: OWC2666R1M96

64.0GB (2 x 32GB) OWC 2666MHz DDR4 PC4-21300 ECC 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) 8-Core models and other systems that utilize PC4-21300 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2666R3M64
OWC SKU: OWC2666R3M64

384.0GB (12 x 32GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R3M384
OWC SKU: OWC2933R3M384

256.0GB (8 x 32GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R3M256
OWC SKU: OWC2933R3M256

128GB OWC PC23400 DDR4 ECC 2933MHz 288-pin LRDIMM Memory Module

For Mac Pro (2019) 12-core to 28-core models and other systems that utilize PC4-23400 LRDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933D4LR128G
OWC SKU: OWC2933D4LR128G

64.0GB (8 x 8GB) OWC 2666MHz DDR4 PC4-21300 ECC 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) 8-Core models and other systems that utilize PC4-21300 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2666R8M64
OWC SKU: OWC2666R8M64

64.0GB (8 x 8GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R8M64
OWC SKU: OWC2933R8M64

192.0GB (12 x 16GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R1M192
OWC SKU: OWC2933R1M192

64.0GB (4 x 16GB) OWC PC23400 DDR4 ECC 2933MHz 288-Pin RDIMM Memory Upgrade Kit

For Mac Pro (2019) models and other systems that utilize PC4-23400 RDIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2933R1M64
OWC SKU: OWC2933R1M64

Limited Quantity

128.0GB (2 x 64GB) OWC 2666MHz DDR4 LRDIMM PC4-21300 288-Pin CL19 Memory Upgrade Kit for iMac Pro (2017)

Memory upgrade kit for iMac Pro (2017). Includes screen adhesive. **Requires Professional Installation** Lifetime OWC Limited Warranty.

Limited Quantity, Only 7 Left!
In Stock: Ships Same Day!

Mfr P/N: DID2627DP128
OWC SKU: OWCDID2627DP128

Limited Quantity

64.0GB OWC 2666MHz DDR4 PC4-21300 ECC 288-Pin LRDIMM Memory Module

For Mac Pro (2019) 8-core models and other systems that utilize PC4-21300 LRDIMM. Lifetime OWC Limited Warranty.

Limited Quantity, Only 16 Left!
In Stock: Ships Same Day!

Mfr P/N: 2666D4LRE64G
OWC SKU: OWC2666D4LRE64G

96.0GB (2 x 32GB + 2 x 16GB) OWC 2400MHz DDR4 PC4-19200 SO-DIMM 260-Pin CL17 Memory Upgrade Kit

Memory upgrade kit for PCs that utilize PC4-19200 SO-DIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2400DDR4S96S
OWC SKU: OWC2400DDR4S96S

128.0GB (4 x 32GB) OWC PC4-19200 DDR4 2400MHz 260-Pin CL17 SO-DIMM Memory Upgrade Kit

For PCs that utilize PC4-19200 SO-DIMM. Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: 2400DR4S128S
OWC SKU: OWC2400DR4S128S

128.0GB (4 x 32GB) OWC 2666MHz DDR4 RDIMM PC4-21300 288-Pin CL19 Memory Upgrade Kit for iMac Pro (2017)

Memory upgrade kit for iMac Pro (2017). Includes screen adhesive. **Requires Professional Installation** Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: DID2627DS128
OWC SKU: OWCDID2627DS128

64.0GB (4 x 16GB) OWC 2666MHz DDR4 RDIMM PC4-21300 288-Pin CL19 Memory Upgrade Kit for iMac Pro (2017)

Memory upgrade kit for iMac Pro (2017). Includes screen adhesive. **Requires Professional Installation** Lifetime OWC Limited Warranty.

In Stock: Ships Same Day!

Mfr P/N: DID2627DS64T
OWC SKU: OWCDID2627DS64T

Showing 1 - 51 of 51 items