Replacement for 9YGI42-021: Drop-In Alternatives We Stock
Looking for a replacement for the 9YGI42-021 (9YGI42-021 - Seagate 320GB 5400RPM SATA 3Gb/s 2.5-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 9YGI42-021
| SKU | 9YGI42-021 |
|---|---|
| Product | 9YGI42-021 - Seagate 320GB 5400RPM SATA 3Gb/s 2.5-inch Hard Drive |
| Current price | $129.58 |
| Stock status | In Stock |
| Detail page | View 9YGI42-021 › |
Drop-in replacements for 9YGI42-021
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.
9SL14C-021 - Seagate BarraCuda 7200.12 320GB 7200RPM SATA 3Gb/s 16MB Cache (CE) 3.5-inch Hard Drive
SKU: 9SL14C-021
Price: $318.32
1DG141-021 - Seagate Momentus Thin 250GB 5400RPM SATA 3Gb/s 16MB Cache (CE) 2.5-inch Hard Drive
SKU: 1DG141-021
Price: $240.29
9HH134-021 - Seagate Momentus 5400.6 500GB 5400RPM SATA 3Gb/s 8MB Cache 2.5-inch Hard Drive
SKU: 9HH134-021
Price: $273.91
1DH142-021 - Seagate Momentus Thin 500GB 5400RPM SATA 3Gb/s 16MB Cache (SED / CE) 2.5-inch Hard Drive
SKU: 1DH142-021
Price: $485.53
1R8174-021 - Seagate Mobile 2TB 5400RPM SATA 6Gb/s 128MB Cache (RoHS) 2.5-inch Hard Drive
SKU: 1R8174-021
Price: $194.74
9W3184-021 - Seagate 120GB 5400RPM SATA 1.5Gb/s 8MB Cache 2.5-inch Hard Drive
SKU: 9W3184-021
Price: $250.53
9W3139-021 - Seagate Momentus 5400.2 100GB 5400RPM SATA 1.5Gb/s 8MB Cache (CE) 2.5-inch Hard Drive
SKU: 9W3139-021
Price: $382.59
1RK172-021 - Seagate Mobile 1TB 5400RPM SATA 6Gb/s 128MB Cache (RoHS) 2.5-inch Hard Drive
SKU: 1RK172-021
Price: $450.00
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.