Replacement for SX550X-12F-K9: Drop-In Alternatives We Stock
Looking for a replacement for the SX550X-12F-K9 (SX550X-12F-K9 - Cisco 12-Port 10GB/s SFP+ Stackable Managed Switch)? Pro Disk Network ships Cisco 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 SX550X-12F-K9
| SKU | SX550X-12F-K9 |
|---|---|
| Product | SX550X-12F-K9 - Cisco 12-Port 10GB/s SFP+ Stackable Managed Switch |
| Stock status | In Stock |
| Detail page | View SX550X-12F-K9 › |
Drop-in replacements for SX550X-12F-K9
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.
WS-C3750G-12S-S - Cisco Catalyst 3750 12-Port Gigabit SFP 10/100/1000Base-T Layer 3 Stackable Managed 1U Rack Mountable Gigabit Ethernet Network Switch
SKU: WS-C3750G-12S-S
Price: $361.05
WS-C3850-12XS-E - Cisco Catalyst 3850 12 x Ports SFP+ 10GBase-T Layer 3 Managed Stackable Gigabit Ethernet Network Switch
SKU: WS-C3850-12XS-E
Price: $1,313.71
WS-C3850-12S-E - Cisco Catalyst 3850 12 x Ports SFP+ 10GBase-T Layer 3 Managed Stackable Gigabit Ethernet Network Switch
SKU: WS-C3850-12S-E
Price: $3,589.89
WS-C3850-12S-S - Cisco Catalyst 3850 12 x Ports SFP+ 10GBase-T Layer 3 Managed Stackable Gigabit Ethernet Network Switch
SKU: WS-C3850-12S-S
Price: $8,036.25
WS-C3850-12XS-S - Cisco Catalyst 3850 12 x Ports SFP+ 10GBase-T Layer 3 Managed Stackable Gigabit Ethernet Network Switch
SKU: WS-C3850-12XS-S
Price: $11,596.25
AG642A - HP Cisco 9124E 24-Port Blade System C-Class Fabric Switch HP Cisco 9124E 24-Port Blade System C-Class Fabric Switch
SKU: AG642A
Price: $273.91
73-14658-02 - Cisco 4-Port 10Gb/s LAN Expansion Module for Catalyst C3850-12X48U-E Switch
SKU: 73-14658-02
Price: $99.93
WS-C2960C-12PC-L - Cisco Catalyst 12-Port 10/100 Managed Rack-Mountable Fast Ethernet Switch
SKU: WS-C2960C-12PC-L
Price: $327.63
73-12522-04 - Cisco UCS P81e Dual-Port 10Gb SFP PCIe Virtual Interface Card
SKU: 73-12522-04
Price: $131.72
UCSB-MLOM-40G-01 - Cisco UCS 1240 4-Port 10GB Virtual Interface Card
SKU: UCSB-MLOM-40G-01
Price: $206.32
UCSC-PCIE-BSFP - Cisco Broadcom 57712 Dual-Port 10Gb/s PCI-Express Network Adapter
SKU: UCSC-PCIE-BSFP
Price: $331.58
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.