Replacement for X4271A: Drop-In Alternatives We Stock
Looking for a replacement for the X4271A (X4271A - Sun 4GB Kit (4 X 1GB) DDR2-400MHz PC2-3200 ECC Registered CL3 240-Pin DIMM Single Rank Memory)? Pro Disk Network ships 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 X4271A
| SKU | X4271A |
|---|---|
| Product | X4271A - Sun 4GB Kit (4 X 1GB) DDR2-400MHz PC2-3200 ECC Registered CL3 240-Pin DIMM Single Rank Memory |
| Current price | $394.46 |
| Stock status | In Stock |
| Detail page | View X4271A › |
Drop-in replacements for X4271A
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.
Dataram DRG450/4GB 4GB Kit (4 X 1GB) DDR2-400MHz PC2-3200 ECC Registered CL3 240-Pin DIMM Memory
SKU: DRG450-4GB
Price: $263.79
311-3827 - Dell 2GB Kit (2 X 1GB) DDR2 DDR2-400MHz PC2-3200 non-ECC Unbuffered CL3 240-Pin Memory for OptiPlex GX280
SKU: 311-3827
Price: $227.88
Dataram DRH380G4S/4GB 4GB Kit (2 x 2GB) DDR2-400MHz PC2-3200 ECC Registered CL3 240-Pin DIMM Memory for DL360/DL380 G4 Servers
SKU: DRH380G4S-4GB
Price: $170.45
Dataram DRG4700/4GB 4GB Kit (2 X 2GB) DDR2-400MHz PC2-3200 ECC Registered CL3 240-Pin DIMM Memory
SKU: DRG4700-4GB
Price: $170.45
TS4GT7305 - Transcend 4GB Kit (4 X 1GB) DDR2-400MHz PC2-3200 ECC Registered CL3 240-Pin DIMM Memory
SKU: TS4GT7305
Price: $320.49
343056-4G2 - HP 4GB Kit (4 X 1GB) DDR2-400MHz PC2-3200 ECC Registered CL3 240-Pin DIMM 1.8V Memory
SKU: 343056-4G2
Price: $443.75
343056-4G1 - HP 4GB Kit (4 X 1GB) DDR2-400MHz PC2-3200 ECC Registered CL3 240-Pin DIMM 1.8V Memory
SKU: 343056-4G1
Price: $443.75
310-4971 - Dell 4GB Kit (4 x 1GB) DDR2-400MHz PC2-3200 ECC Registered CL3 240-Pin DIMM Single Rank Memory for Precision 470/670
SKU: 310-4971
Price: $443.75
311-3820 - Dell 4GB Kit (4 X 1GB) DDR2-400MHz PC2-3200 ECC Registered CL3 240-Pin DIMM Single Rank Memory for PowerEdge SC1420 Server
SKU: 311-3820
Price: $443.75
G7594 - Dell 4GB Kit (4 X 1GB) DDR2-400MHz PC2-3200 ECC Registered CL3 240-Pin DIMM Single Rank Memory
SKU: G7594
Price: $443.75
311-3615 - Dell 4GB Kit (4 X 1GB) DDR2-400MHz PC2-3200 ECC Registered CL3 240-Pin DIMM Single Rank Memory
SKU: 311-3615
Price: $443.75
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.