Replacement for 03X5999: Drop-In Alternatives We Stock
Looking for a replacement for the 03X5999 (03X5999 - Lenovo SAS/SATA Hot Swap 3.5-inch 4 Bay Backplane Board for ThinkServer TS440)? Pro Disk Network ships IBM 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 03X5999
| SKU | 03X5999 |
|---|---|
| Product | 03X5999 - Lenovo SAS/SATA Hot Swap 3.5-inch 4 Bay Backplane Board for ThinkServer TS440 |
| Current price | $630.54 |
| Stock status | In Stock |
| Detail page | View 03X5999 › |
Drop-in replacements for 03X5999
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.
46W9187 - IBM 8 x 2.5-inch SAS / SATA Hot Swap Hard Drive Backplane for System x3650 M4
SKU: 46W9187
Price: $208.42
00KG126 - IBM 2.5-inch SAS / SATA Backplane 2-Bay for NeXtScale nx360 M5 (Front)
SKU: 00KG126
Price: $185.68
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.