Replacement for ST340810A2: Drop-In Alternatives We Stock
Looking for a replacement for the ST340810A2 (ST340810A2 Seagate 40GB 5400RPM ATA 100 3.5-Inch)? 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 ST340810A2
| SKU | ST340810A2 |
|---|---|
| Product | ST340810A2 Seagate 40GB 5400RPM ATA 100 3.5-Inch |
| Current price | $252.87 |
| Stock status | In Stock |
| Detail page | View ST340810A2 › |
Drop-in replacements for ST340810A2
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.
ST940210A - Seagate LD25.2 Series 40GB 5400RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache 2.5-inch Hard Drive
SKU: ST940210A
Price: $113.68
ST340019ACE - Seagate BarraCuda 5400.1 40GB 5400RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache 3.5-inch Hard Drive
SKU: ST340019ACE
Price: $119.08
ST340810A - Seagate 40GB 5400RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache 3.5-inch Hard Drive
SKU: ST340810A
Price: $155.79
9R4007-530 - Seagate U5 Series 40GB 5400RPM IDE Ultra ATA/100 (ATA-6) 512KB Cache (CE) 3.5-inch Hard Drive
SKU: 9R4007-530
Price: $157.00
9Y3001-006 - Seagate BarraCuda 5400.1 40GB 5400RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache (CE) 3.5-inch Hard Drive
SKU: 9Y3001-006
Price: $165.79
9Y3001-040 - Seagate BarraCuda 5400.1 40GB 5400RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache (CE) 3.5-inch Hard Drive
SKU: 9Y3001-040
Price: $205.26
9T7002-305 - Seagate U6 40GB 5400RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache 3.5-inch Hard Drive
SKU: 9T7002-305
Price: $211.97
9R4007-645 - Seagate U5 Series 40GB 5400RPM IDE Ultra ATA/100 (ATA-6) 512KB Cache (CE) 3.5-inch Hard Drive
SKU: 9R4007-645
Price: $265.26
100271841 - Seagate BarraCuda 5400.1 40GB 5400RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache 3.5-inch Hard Drive
SKU: 100271841
Price: $305.05
9Y3001-001 - Seagate BarraCuda 5400.1 40GB 5400RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache (CE) 3.5-inch Hard Drive
SKU: 9Y3001-001
Price: $310.36
9R4007-004 - Seagate U5 Series 40GB 5400RPM IDE Ultra ATA/100 (ATA-6) 512KB Cache (CE) 3.5-inch Hard Drive
SKU: 9R4007-004
Price: $339.07
9T7002-304 - Seagate U6 40GB 5400RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache 3.5-inch Hard Drive
SKU: 9T7002-304
Price: $346.88
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.