Replacement for 540-7990: Drop-In Alternatives We Stock
Looking for a replacement for the 540-7990 (540-7990 - Sun Spare 2drv Assy N5220 N4250)? 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 540-7990
| SKU | 540-7990 |
|---|---|
| Product | 540-7990 - Sun Spare 2drv Assy N5220 N4250 |
| Stock status | In Stock |
| Detail page | View 540-7990 › |
Drop-in replacements for 540-7990
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.
RG5-7990 - HP E-Label Memory Controller PC Board for Color LaserJet 5500 / 5550 Printer
SKU: RG5-7990
Price: $113.68
RG5-7990-000 - HP E-Label Memory Controller PC Board for Color LaserJet 5500 / 5550 Printer
SKU: RG5-7990-000
Price: $113.68
RG5-7990-000CN - HP E-Label Memory Controller PC Board for Color LaserJet 5500 / 5550 Printer
SKU: RG5-7990-000CN
Price: $113.68
FX-799A-XNF9 - XFX Radeon HD 7990 6GB GDDR5 384-Bit PCI Express 3.0 x16 DVI/ 4x Mini DisplayPort Video Graphics Card
SKU: FX-799A-XNF9
Price: $1,635.79
R7990-6GD5 - MSI Radeon HD 7990 6GB 384-Bit X2 GDDR5 PCI Express 3 Video Graphics Card
SKU: R7990-6GD5
Price: $1,752.61
V803-836R - MSI AMD Radeon HD 7990 950/1000MHz 6000MHz 6144MB DDR5 Ram 384b Video Graphics Card
SKU: V803-836R
Price: $2,466.61
501-7514-03 - Sun Spare System Board (Motherboard) for Fire X4200 / StorageTek 5320
SKU: 501-7514-03
Price: $95.47
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.