Replacement for 540-6644: Drop-In Alternatives We Stock
Looking for a replacement for the 540-6644 (540-6644 - Sun 80GB 7200RPM SATA 3Gbps 8MB Cache 3.5-inch Internal Hard Drive)? 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 540-6644
| SKU | 540-6644 |
|---|---|
| Product | 540-6644 - Sun 80GB 7200RPM SATA 3Gbps 8MB Cache 3.5-inch Internal Hard Drive |
| Current price | $291.79 |
| Stock status | In Stock |
| Detail page | View 540-6644 › |
Drop-in replacements for 540-6644
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.
540-6595 - Sun 80GB 7200RPM SATA 1.5Gbps 8MB Cache 3.5-inch Internal Hard Drive with Bracket
SKU: 540-6595
Price: $259.50
540-7054 - Sun 80GB 7200RPM SATA 3Gb/s 8MB Cache 3.5-inch Hard Drive for Fire Server X2100
SKU: 540-7054
Price: $344.84
370-6644-01 - Sun 1GB DDR-333MHz PC2700 ECC Registered CL2.5 184-Pin DIMM Memory Module
SKU: 370-6644-01
Price: $239.01
370-6644 - Sun 2GB Kit (2 X 1GB) PC2700 DDR-333MHz ECC Registered CL2.5 184-Pin DIMM Memory
SKU: 370-6644
Price: $254.04
661-6644 - Apple 64GB TS Flash Storage Solid State Drive for MacBook Air 11 A1370
SKU: 661-6644
Price: $1,344.78
540-6364-01 - Sun 400GB 7200RPM SATA 1.5Gb/s 8MB Cache 3.5-inch Hard Drive
SKU: 540-6364-01
Price: $291.79
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.