Replacement for KVR21S1: Drop-In Alternatives We Stock
Looking for a replacement for the KVR21S1 (KVR21S1 - Kingston 16GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Dual Rank Memory Module)? Pro Disk Network ships Kingston drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the KVR21S1
| SKU | KVR21S1 |
|---|---|
| Product | KVR21S1 - Kingston 16GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Dual Rank Memory Module |
| Current price | $194.41 |
| Stock status | In Stock |
| Detail page | View KVR21S1 › |
Drop-in replacements for KVR21S1
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
Kingston Technology KVR21S15D8/16BK 16GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Dual Rank Memory Module
SKU: KVR21S15D8-16BK
Price: $194.41
Kingston Technology KCP421SD8/16 16GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Dual Rank Memory Module
SKU: KCP421SD8-16
Price: $194.41
Kingston Technology KVR21S15D8/16 16GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Dual Rank Memory Module
SKU: KVR21S15D8-16
Price: $194.41
Kingston Technology KVR21SE15D8/16 16GB DDR4-2133MHz PC4-17000 ECC Unbuffered CL15 260-Pin SoDimm 1.2V Dual Rank Memory Module
SKU: KVR21SE15D8-16
Price: $243.82
Kingston Technology KTH-PN421E/16G 16GB DDR4-2133MHz PC4-17000 ECC Unbuffered CL15 260-Pin SoDimm 1.2V Dual Rank Memory Module
SKU: KTH-PN421E-16G
Price: $243.82
Kingston Technology KVR21S15S8K2/16 16GB Kit (2 X 8GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Single Rank Memory
SKU: KVR21S15S8K2-16
Price: $263.07
Kingston Technology HX421S13IBK2/16 16GB Kit (2 X 8GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Memory
SKU: HX421S13IBK2-16
Price: $282.38
Kingston Technology HX421S14IBK4/16 16GB Kit (4 X 4GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Memory
SKU: HX421S14IBK4-16
Price: $292.70
Kingston Technology HX421S13IB/16 16GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Dual Rank Memory Module
SKU: HX421S13IB-16
Price: $440.16
Kingston Technology HX421S13IBK2/32 32GB Kit (2 X 16GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Memory
SKU: HX421S13IBK2-32
Price: $500.33
Kingston Technology HX421S14IBK4/64 64GB Kit (4 X 16GB) DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Memory
SKU: HX421S14IBK4-64
Price: $932.03
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.