Replacement for 540-6400-02: Drop-In Alternatives We Stock
Looking for a replacement for the 540-6400-02 (540-6400-02 - Sun 1GB Kit (2 X 512MB) DDR-333MHz PC2700 ECC Registered CL2.5 184-Pin DIMM 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 540-6400-02
| SKU | 540-6400-02 |
|---|---|
| Product | 540-6400-02 - Sun 1GB Kit (2 X 512MB) DDR-333MHz PC2700 ECC Registered CL2.5 184-Pin DIMM Memory |
| Current price | $454.13 |
| Stock status | In Stock |
| Detail page | View 540-6400-02 › |
Drop-in replacements for 540-6400-02
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.
540-6402 - Sun 4GB Kit (2 X 2GB) DDR-333MHz PC2700 ECC Registered CL2.5 184-Pin DIMM Dual Rank Memory
SKU: 540-6402
Price: $254.04
5406428-02 - Sun 2GB Kit (2 X 1GB) DDR-400MHz PC3200 ECC Registered CL3 184-Pin DIMM Memory for Sun V20z V40z
SKU: 5406428-02
Price: $202.55
X8021A-Z - Sun 1GB Kit (2 X 512MB) PC3200 DDR-400MHz ECC Registered CL3 184-Pin DIMM Single Rank Memory
SKU: X8021A-Z
Price: $250.88
X8021AZ - Sun 1GB Kit (2 X 512MB) DDR-400MHz PC3200 ECC Registered CL3 184-Pin DIMM Memory for Fire X4100 and X4200 Servers
SKU: X8021AZ
Price: $250.88
X8021A - Sun 1GB Kit (2 X 512MB) PC3200 DDR-400MHz ECC Registered CL3 184-Pin DIMM Single Rank Memory
SKU: X8021A
Price: $250.88
540-7778-02 - Sun 2GB Kit (2 X 1GB) DDR2-667MHz PC2-5300 ECC Registered CL5 240-Pin DIMM Dual Rank Memory
SKU: 540-7778-02
Price: $351.68
540-5086-02 - Sun 1GB 100MHz PC100 ECC Registered 3.3V 7ns 232-Pin DIMM Memory Module for Sun Fire 280R and Blade 1000
SKU: 540-5086-02
Price: $143.39
Dataram DRN5802/1GB 1GB Kit (2 X 512MB) DDR-266MHz PC2100 ECC Registered CL2.5 184-Pin Memory
SKU: DRN5802-1GB
Price: $210.63
X7702A-4 - Sun 512MB Kit (2 X 256MB) PC2100 DDR-266MHz ECC Registered CL2.5 184-Pin DIMM Memory
SKU: X7702A-4
Price: $231.59
X7402A - Sun 512MB Kit (2 X 256MB) DDR-266MHz PC2100 ECC Registered CL2.5 184-Pin DIMM Memory
SKU: X7402A
Price: $231.59
X7602A - Sun 512MB Kit (2 X 256MB) PC2100 DDR-266MHz ECC Registered CL2.5 184-Pin DIMM Memory
SKU: X7602A
Price: $231.59
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.