Replacement for 574549-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 574549-B21 (574549-B21 - HP Rail Kit for Catalyst 4948 Series Switch)? Pro Disk Network ships HP 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 574549-B21
| SKU | 574549-B21 |
|---|---|
| Product | 574549-B21 - HP Rail Kit for Catalyst 4948 Series Switch |
| Current price | $436.22 |
| Stock status | In Stock |
| Detail page | View 574549-B21 › |
Drop-in replacements for 574549-B21
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.
341519-001 - HP 1U Rack Mounting Rail Kit for KVM Switch Box Console (complete Kit) (4/8/2x8/-Port and IP KVM Switch Boxes)
SKU: 341519-001
Price: $130.45
313877-B21 - HP Rackmount Rail Kit for HP StorageWorks MSA500 / 1000 and M-Series H9A10 / H9A11 / H9A15 Cabinets
SKU: 313877-B21
Price: $265.26
377839-001 - HP RackMount Side Rail Kit Left/Right 3U-7U for HP ProLiant ML/DL Series Server
SKU: 377839-001
Price: $429.47
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.