Replacement for WSP-Q40GLR4L: Drop-In Alternatives We Stock
Looking for a replacement for the WSP-Q40GLR4L (Cisco WSP-Q40GLR4L 40Gb/s 40GBase-LR4L Single-Mode Fiber 2km 1310nm Duplex LC Connector QSFP+ 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 WSP-Q40GLR4L
| SKU | WSP-Q40GLR4L |
|---|---|
| Product | Cisco WSP-Q40GLR4L 40Gb/s 40GBase-LR4L Single-Mode Fiber 2km 1310nm Duplex LC Connector QSFP+ Transceiver Module Spare |
| Current price | $726.47 |
| Stock status | In Stock |
| Detail page | View WSP-Q40GLR4L › |
Drop-in replacements for WSP-Q40GLR4L
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.
SFP-OC48-SR-RF - Cisco SFP-OC48-SR - Cisco 2.5Gb/s OC-48/STM-16 SR-1 Single-Mode Fiber 2km 1310nm Duplex LC Connector SFP Transceiver Module
SKU: SFP-OC48-SR-RF
Price: $113.36
10-1970-01 - Cisco 622Mb/s OC-12/STM-4 Single-Mode Fiber 2km 1310nm Duplex LC Connector SFP Transceiver Module
SKU: 10-1970-01
Price: $99.58
Cisco SFP-OC48-SR Single-mode 2.5Gbps Fiber 2km 1310nm Duplex LC Connector SFP Transceiver Module
SKU: SFP-OC48-SR
Price: $113.36
ONS-SI-2G-S1 - Cisco Single-Mode 2.48Gbps OC-48/STM-16 SR-1 Fiber 2km 1310nm Duplex LC Connector SFP Transceiver Module
SKU: ONS-SI-2G-S1
Price: $448.51
ONS-SE-2G-S1-RF - Cisco 2.5Gbps 2.5GBase OC-48/STM-16/2.5G SONET SR Single-mode Fiber 2km 1310nm LC Connector SFP Transceiver Module
SKU: ONS-SE-2G-S1-RF
Price: $699.95
10-1971-02 - Cisco 2.5Gb/s 1000Base-LX OC-48/STM-16 SR-1 Single-Mode Fiber 2km 1310nm Duplex LC Connector SFP Transceiver Module
SKU: 10-1971-02
Price: $749.08
ONS-SE-2G-S1 - Cisco Single-Mode 2.5Gbps 2.5GBase OC-48/STM-16/2.5G SONET SR Fiber 2km 1310nm LC Connector SFP Transceiver Module
SKU: ONS-SE-2G-S1
Price: $787.07
QSFP-100G-SM-SR - Cisco Single-Mode 100Gbps 100GBase-CWDM4 Fiber 2km 1310nm LC Connector QSFP Transceiver Module
SKU: QSFP-100G-SM-SR
Price: $6,843.83
MFEFX1-C - Cisco 100Mbps 100Base-FX Multi-mode Fiber 2km 1310nm Duplex LC Connector SFP (mini-GBIC) Transceiver Module
SKU: MFEFX1-C
Price: $76.09
SFP-OC3-SR - Cisco 155Mb/s OC-3/STM-1 Multi-Mode Fiber 2km 1310nm Duplex LC Connector SFP Transceiver Module
SKU: SFP-OC3-SR
Price: $79.66
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.