Replacement for ST3300555SS-U: Drop-In Alternatives We Stock
Looking for a replacement for the ST3300555SS-U (ST3300555SS-U Seagate 300GB 15000RPM SAS 3Gb/s)? 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 ST3300555SS-U
| SKU | ST3300555SS-U |
|---|---|
| Product | ST3300555SS-U Seagate 300GB 15000RPM SAS 3Gb/s |
| Stock status | In Stock |
| Detail page | View ST3300555SS-U › |
Drop-in replacements for ST3300555SS-U
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.
9Z1066-023 - Seagate Cheetah 15K.5 300GB 15000RPM SAS 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 9z1066-023
Price: $103.16
9DJ066-080 - Seagate Cheetah T10 300GB 15000RPM SAS 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 9DJ066-080
Price: $103.62
9Z1066-046 - Seagate 300GB 15000RPM SAS 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 9Z1066-046
Price: $113.68
9Z1066-065 - Seagate 300GB 15000RPM SAS 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 9Z1066-065
Price: $113.68
9Z1066-004 - Seagate Cheetah 15K.5 300GB 15000RPM SAS 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 9Z1066-004
Price: $113.68
43X0867 - IBM / Seagate Cheetah 15K.6 300GB 15000RPM SAS 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 43X0867
Price: $115.58
9CH066-043 - Seagate Cheetah 15K.6 300GB 15000RPM SAS 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 9CH066-043
Price: $123.28
ST3300655SS - Seagate Cheetah 15K.5 300GB 15000RPM SAS 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: ST3300655SS
Price: $128.42
9Z1066-051 - Seagate Cheetah 15K.5 300GB 15000RPM SAS 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 9Z1066-051
Price: $131.58
9Z1066-033 - Seagate Cheetah 15K.5 300GB 15000RPM SAS 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 9Z1066-033
Price: $138.95
9Z1066-886 - Seagate Cheetah 15K.5 300GB 15000RPM SAS 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 9Z1066-886
Price: $147.37
9Z1066-080 - Seagate Cheetah 15K.5 300GB 15000RPM SAS 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 9Z1066-080
Price: $147.37
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.