Replacement for ST320410A-REF: Drop-In Alternatives We Stock
Looking for a replacement for the ST320410A-REF (ST320410A-REF Seagate 20GB 5400RPM ATA 100 3.5-)? Pro Disk Network ships Seagate 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 ST320410A-REF
| SKU | ST320410A-REF |
|---|---|
| Product | ST320410A-REF Seagate 20GB 5400RPM ATA 100 3.5- |
| Stock status | In Stock |
| Detail page | View ST320410A-REF › |
Drop-in replacements for ST320410A-REF
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.
ST320015A - Seagate BarraCuda 5400.1 20GB 5400RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache 3.5-inch Hard Drive
SKU: ST320015A
Price: $94.21
9T7001-804 - Seagate U6 Series 20GB 5400RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache (CE) 3.5-inch Hard Drive
SKU: 9T7001-804
Price: $149.00
9R4003-105 - Seagate U5 Series 20GB 5400RPM IDE Ultra ATA/100 (ATA-6) 512KB Cache (CE) 3.5-inch Hard Drive
SKU: 9R4003-105
Price: $151.63
9W1021-391 - Seagate U Series X 20GB 5400RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache (CE) 3.5-inch Hard Drive
SKU: 9W1021-391
Price: $154.61
9W1021-009 - Seagate U Series X 20GB 5400RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache (CE) 3.5-inch Hard Drive
SKU: 9W1021-009
Price: $192.51
9T7001-736 - Seagate U6 Series 20GB 5400RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache (CE) 3.5-inch Hard Drive
SKU: 9T7001-736
Price: $221.59
9R4003-643 - Seagate U5 Series 20GB 5400RPM IDE Ultra ATA/100 (ATA-6) 512KB Cache (CE) 3.5-inch Hard Drive
SKU: 9R4003-643
Price: $227.39
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.