Replacement for WS-C3550-12T: Drop-In Alternatives We Stock
Looking for a replacement for the WS-C3550-12T (WS-C3550-12T - Cisco 12-Port 10 GBIC-based Ports + 2 x 10/100/1000 Ports Layer 2 Managed Gigabit Ethernet Network 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 WS-C3550-12T
| SKU | WS-C3550-12T |
|---|---|
| Product | WS-C3550-12T - Cisco 12-Port 10 GBIC-based Ports + 2 x 10/100/1000 Ports Layer 2 Managed Gigabit Ethernet Network Switch |
| Stock status | In Stock |
| Detail page | View WS-C3550-12T › |
Drop-in replacements for WS-C3550-12T
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.
15454-GBIC-1490 - Cisco 1Gbps 1000Base-CWDM Single-mode Fiber 120km 1490nm Duplex SC Connector GBIC Transceiver Module
SKU: 15454-GBIC-1490
Price: $197.61
15454-GBIC-1470 - Cisco 1Gbps 1000Base-CWDM Single-mode Fiber 120km 1470nm Duplex SC Connector GBIC Transceiver Module
SKU: 15454-GBIC-1470
Price: $740.41
DWDM-GBIC-1531.12 - Cisco 1.25Gbps 1000Base-ZX DWDM Single-mode Fiber 80km 1531.12nm SC Connector GBIC Transceiver Module
SKU: DWDM-GBIC-1531.12
Price: $3,144.07
DWDM-GBIC-1546.12 - Cisco 1.25Gbps 1000Base-ZX DWDM Single-mode Fiber 80km 1546.12nm SC Connector GBIC Transceiver Module
SKU: DWDM-GBIC-1546.12
Price: $3,144.07
DWDM-GBIC-1550.12 - Cisco 1.25Gbps 1000Base-ZX DWDM Single-mode Fiber 80km 1550.12nm SC Connector GBIC Transceiver Module
SKU: DWDM-GBIC-1550.12
Price: $3,144.07
DWDM-GBIC-50.12 - Cisco 1.25Gbps 1000Base-DWDM Single-mode Fiber 80km 1550.12nm Duplex SC Connector GBIC Transceiver Module
SKU: DWDM-GBIC-50.12
Price: $3,145.82
DWDM-GBIC-31.12 - Cisco 1.25Gbps 1000Base-DWDM Single-Mode Fiber 80km 1531.12nm Duplex SC Connector GBIC Transceiver Module
SKU: DWDM-GBIC-31.12
Price: $3,145.82
73-12121-01 - Cisco Nexus 1000 Series 10Gb/s 10Base-SR Multi-Mode 6 x Ports LC Connector SFP+ Expansion Module
SKU: 73-12121-01
Price: $211.97
15454DS312 - Cisco 15454 44.7Mb/s 10Base-T Multi-Mode 12 x Ports LC Connector SFP (mini-GBIC) Expansion Module
SKU: 15454DS312
Price: $109.75
15454-E100T-12 - Cisco Catalyst 3800 1Gb/s 1000Base-T Multi-Mode 12 x Ports Uplink RJ-45 Connector SFP(mini GBIC Ethernet Line Card
SKU: 15454-E100T-12
Price: $268.38
451439R-B21 - HP/Cisco Catalyst 3120X 4 x Ports 10/100/1000Base-T + 2 x SFP Gigabit Ethernet Blade Switch Module
SKU: 451439R-B21
Price: $189.47
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.