Replacement for ST3500321CS: Drop-In Alternatives We Stock
Looking for a replacement for the ST3500321CS (ST3500321CS - Seagate Pipeline HD 500GB SATA 3Gb/s 7200RPM 8MB Cache Hot Swappable 3.5-inch Hard Drive)? 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 ST3500321CS
| SKU | ST3500321CS |
|---|---|
| Product | ST3500321CS - Seagate Pipeline HD 500GB SATA 3Gb/s 7200RPM 8MB Cache Hot Swappable 3.5-inch Hard Drive |
| Current price | $157.07 |
| Stock status | In Stock |
| Detail page | View ST3500321CS › |
Drop-in replacements for ST3500321CS
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.
9GW132-505 - Seagate Pipeline HD.2 500GB 5900RPM SATA 3Gb/s 8MB Cache 3.5-inch Hard Drive
SKU: 9GW132-505
Price: $110.53
9GW132-076 - Seagate Pipeline HD.2 500GB 5900RPM SATA 3Gb/s 8MB Cache 3.5-inch Hard Drive
SKU: 9GW132-076
Price: $110.53
9GW132-193 - Seagate Pipeline HD.2 500GB 5900RPM SATA 3Gb/s 8MB Cache 3.5-inch Hard Drive
SKU: 9GW132-193
Price: $110.53
9GW132-291 - Seagate Pipeline HD.2 500GB 5900RPM SATA 3Gb/s 8MB Cache 3.5-inch Hard Drive
SKU: 9GW132-291
Price: $129.58
ST3500312CS - Seagate Pipeline HD.2 500GB 5900RPM SATA 3Gb/s 8MB Cache 3.5-inch Hard Drive
SKU: ST3500312CS
Price: $145.26
9GW132-103 - Seagate Pipeline HD.2 500GB 5900RPM SATA 3Gb/s 8MB Cache 3.5-inch Hard Drive
SKU: 9GW132-103
Price: $175.51
9GW132-603 - Seagate Pipeline HD.2 500GB 5900RPM SATA 3Gb/s 8MB Cache 3.5-inch Hard Drive
SKU: 9GW132-603
Price: $226.08
ST9500323CS - Seagate Pipeline HD Mini 500GB 5400RPM SATA 3Gb/s 8MB Cache 2.5-inch Hard Drive
SKU: ST9500323CS
Price: $247.58
9GC13G-262 - Seagate Pipeline 500GB 5900RPM SATA 3Gb/s 8MB Cache 3.5-inch Hard Drive
SKU: 9GC13G-262
Price: $357.09
ST3500414CS - Seagate Pipeline HD.2 500GB 5900RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: ST3500414CS
Price: $68.42
9GW142-160 - Seagate Pipeline HD.2 500GB 5900RPM SATA 3Gb/s 16MB Cache (CE) 3.5-inch Hard Drive
SKU: 9GW142-160
Price: $110.53
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.