Replacement for KVR21SE15S8-4: Drop-In Alternatives We Stock
Looking for a replacement for the KVR21SE15S8-4 (Kingston Technology KVR21SE15S8/4 4GB DDR4-2133MHz PC4-17000 ECC Unbuffered CL15 260-Pin SoDimm 1.2V Single 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 KVR21SE15S8-4
| SKU | KVR21SE15S8-4 |
|---|---|
| Product | Kingston Technology KVR21SE15S8/4 4GB DDR4-2133MHz PC4-17000 ECC Unbuffered CL15 260-Pin SoDimm 1.2V Single Rank Memory Module |
| Current price | $158.07 |
| Stock status | In Stock |
| Detail page | View KVR21SE15S8-4 › |
Drop-in replacements for KVR21SE15S8-4
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 KVR21S15S8/4 4GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Single Rank Memory Module
SKU: KVR21S15S8-4
Price: $89.01
Kingston Technology KCP421SS8/4 4GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Memory Module
SKU: KCP421SS8-4
Price: $89.01
Kingston Technology KVR21N15S6/4 4GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Single Rank Memory Module
SKU: KVR21N15S6-4
Price: $89.12
Kingston Technology KVR21N15S6/4BK 4GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Single Rank Memory Module
SKU: KVR21N15S6-4BK
Price: $89.12
Kingston Technology KVR21N15S8/4 4GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Single Rank Memory Module
SKU: KVR21N15S8-4
Price: $89.12
Kingston Technology KTH-PD421/4G 4GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Memory Module
SKU: KTH-PD421-4G
Price: $89.12
Kingston Technology KCP421NS8/4 4GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Memory Module
SKU: KCP421NS8-4
Price: $89.12
Kingston Technology HX421C13SB/4 4GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 288-Pin DIMM 1.2V Memory Module
SKU: HX421C13SB-4
Price: $118.53
Kingston Technology HX421S13IB/4 4GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Single Rank Memory Module
SKU: HX421S13IB-4
Price: $118.53
Kingston Technology KVR21S15S6/4 4GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Single Rank Memory Module
SKU: KVR21S15S6-4
Price: $127.80
Kingston Technology KVR21S15S6/4BK 4GB DDR4-2133MHz PC4-17000 non-ECC Unbuffered CL15 260-Pin SoDimm 1.2V Single Rank Memory Module
SKU: KVR21S15S6-4BK
Price: $127.80
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.