Replacement for ST3491AR: Drop-In Alternatives We Stock
Looking for a replacement for the ST3491AR (ST3491AR Seagate Medalist 3491A 428MB 3800RPM)? 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 ST3491AR
| SKU | ST3491AR |
|---|---|
| Product | ST3491AR Seagate Medalist 3491A 428MB 3800RPM |
| Stock status | In Stock |
| Detail page | View ST3491AR › |
Drop-in replacements for ST3491AR
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.
9A6007-020 - Seagate Medalist 3491A 428MB 3800RPM ATA/IDE 128KB Cache 3.5-inch Hard Drive
SKU: 9A6007-020
Price: $339.33
160702-001 - Compaq / Seagate Medalist 210XE 214MB 3800RPM ATA/IDE 120KB Cache 3.5-inch Hard Drive
SKU: 160702-001
Price: $157.00
ST3660A - Seagate Medalist 545XE 546MB 3800RPM IDE/ATA 120KB Cache 3.5-inch Hard Drive
SKU: ST3660A
Price: $194.74
ST3250A - Seagate Medalist 210XE 214MB 3800RPM ATA/IDE 120KB Cache 3.5-inch Hard Drive
SKU: ST3250A
Price: $226.08
9A6001-036 - Seagate Medalist 210XE 214MB 3800RPM ATA/IDE 120KB Cache 3.5-inch Hard Drive
SKU: 9A6001-036
Price: $250.53
ST3391A - Seagate Medalist 341MB 3800RPM IDE/ATA 120KB Cache 3.5-inch Hard Drive
SKU: ST3391A
Price: $273.91
9A6006-306 - Seagate Medalist 341MB 3800RPM ATA/IDE 120KB Cache 3.5-inch Hard Drive
SKU: 9A6006-306
Price: $296.30
ST3850A - Seagate Medalist 850XE 850MB 3800RPM IDE/ATA 120KB Cache 3.5-inch Hard Drive
SKU: ST3850A
Price: $302.11
184037-001 - Compaq / Seagate Medalist 210XE 214MB 3800RPM ATA/IDE 120KB Cache 3.5-inch Hard Drive
SKU: 184037-001
Price: $331.99
958002-405 - Seagate Medalist 545XE 546MB 3800RPM IDE/ATA 120KB Cache 3.5-inch Hard Drive
SKU: 958002-405
Price: $392.34
958005-031 - Seagate Medalist 270XE 273MB 3800RPM IDE/ATA 120KB Cache 3.5-inch Hard Drive
SKU: 958005-031
Price: $395.34
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.