Replacement for GLC-BX-U40: Drop-In Alternatives We Stock
Looking for a replacement for the GLC-BX-U40 (GLC-BX-U40 - Cisco 1Gbps 1000Base-BX-U Bi-Directional 40km Single-mode Fiber 1310nm/1490nm SFP Transceiver)? 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-BX-U40
| SKU | GLC-BX-U40 |
|---|---|
| Product | GLC-BX-U40 - Cisco 1Gbps 1000Base-BX-U Bi-Directional 40km Single-mode Fiber 1310nm/1490nm SFP Transceiver |
| Current price | $143.76 |
| Stock status | In Stock |
| Detail page | View GLC-BX-U40 › |
Drop-in replacements for GLC-BX-U40
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-BX-D40 - Cisco 1.25Gbps 1000Base-BX-D Bi-Directional Single-mode Fiber 40km 1490nm/1310nm LC Connector SFP Transceiver Module
SKU: GLC-BX-D40
Price: $85.82
GLC-BX-U20 - Cisco 1Gbps 1000Base-BX-U Bi-Directional 20km Single-mode Fiber 1310nm/1490nm SFP Transceiver
SKU: GLC-BX-U20
Price: $78.00
GLC-BX-D20 - Cisco 1Gbps 1000Base-BX-D Bi-Directional 20km Single-mode Fiber 1490nm/1310nm SFP Transceiver
SKU: GLC-BX-D20
Price: $414.86
Cisco GLC-BX40-DA-I 1.25Gb/s 1000Base-BX40-D Single-Mode Fiber 40km 1490nm-TX/1310nm-RX LC Connector SFP Transceiver Module Spare
SKU: GLC-BX40-DA-I
Price: $1,454.54
GLC-BX-U-60KM - Cisco 1Gbps 1000Base-BXU Single-mode Fiber 1310nm TX/1490nm RX 60km SFP Transceiver Module
SKU: GLC-BX-U-60KM
Price: $78.00
GLC-BX-U-20KM - Cisco 1Gbps 1000Base-BXU Single-mode Fiber 1310nm TX/1490nm RX 20km SFP Transceiver Module
SKU: GLC-BX-U-20KM
Price: $114.36
Cisco GLC-2BX-D 1.25Gb/s 1000Base-BX10-D Single-Mode Fiber 10km 1490nm/1310nm LC Connector SFP Transceiver Module Spare
SKU: GLC-2BX-D
Price: $188.13
GLC-BX-U-80KM - Cisco 1Gbps 1000Base-BXU Single-mode Fiber 1310nm TX/1490nm RX 80km SFP Transceiver Module
SKU: GLC-BX-U-80KM
Price: $200.76
GLC-BX-U-RF - Cisco 1.25Gb/s 1000Base-BX-U Single-Mode Fiber 10km 1310nm-TX/1490nm-RX LC Connector SFP Transceiver Module
SKU: GLC-BX-U-RF
Price: $212.21
GLC-BX-D-80 - Cisco Single-Mode 1Gbps 1000Base-BX-D Fiber 80km 1310nm-RX/1490nm-TX LC Connector SFP Transceiver Module
SKU: GLC-BX-D-80
Price: $297.22
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.