Replacement for GLC-SX-MM: Drop-In Alternatives We Stock
Looking for a replacement for the GLC-SX-MM (Cisco GLC-SX-MM 1.25Gb/s 1000Base-SX Multi-Mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module Spare)? 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 GLC-SX-MM
| SKU | GLC-SX-MM |
|---|---|
| Product | Cisco GLC-SX-MM 1.25Gb/s 1000Base-SX Multi-Mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module Spare |
| Current price | $79.66 |
| Stock status | In Stock |
| Detail page | View GLC-SX-MM › |
Drop-in replacements for GLC-SX-MM
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.
GLC-SX-MMD - Cisco 1.25Gb/s 1000Base-SX Multi-Mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module
SKU: GLC-SX-MMD
Price: $10.53
Cisco GLC-SX-MM=-RF 1.25Gbps 1000Base-SX Multi-mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module
SKU: GLC-SX-MM--RF
Price: $78.00
GLC-SX-MM-06 - Cisco 1.25Gb/s 1000Base-SX Multi-Mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module
SKU: GLC-SX-MM-06
Price: $98.84
Cisco GLC-SX-MMD=-A1 1.25Gbps 1000Base-SX Multi-mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module
SKU: GLC-SX-MMD--A1
Price: $99.99
GLC-SX-MMD-RF-CPO - Cisco 1.25Gbps 1000Base-SX Multi-mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module
SKU: GLC-SX-MMD-RF-CPO
Price: $105.68
GLC-SX-MMD-RF - Cisco 1.25Gb/s 1000Base-SX Multi-Mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module
SKU: GLC-SX-MMD-RF
Price: $150.88
GLC-SX-MM-RF - Cisco 1.25Gb/s 1000Base-SX Multi-Mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module
SKU: GLC-SX-MM-RF
Price: $154.38
Cisco GLC-SX-MM-RGD Multi-mode 1.25Gbps 1000Base-SX Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module
SKU: GLC-SX-MM-RGD
Price: $176.21
30-1301-03 - Cisco 1.25Gb/s 1000Base-SX Multi-Mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module
SKU: 30-1301-03
Price: $62.17
WS-G5484-01 - Cisco 1Gbps 1000Base-SX Multi-mode Fiber Short Wave 550m 850nm Duplex SC Connector GBIC Transceiver Module
SKU: WS-G5484-01
Price: $78.00
WS-G5484-2 - Cisco 1Gbps 1000Base-SX Multi-mode Fiber 550m 850nm Duplex SC Connector GBIC Transceiver Module
SKU: WS-G5484-2
Price: $78.00
WS-G5484-C-KOMPATIBL - Cisco 1Gbps 1000Base-SX Multi-mode Fiber Short Wave 550m 850nm Duplex SC Connector GBIC Transceiver Module
SKU: WS-G5484-C-KOMPATIBL
Price: $78.00
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.