Replacement for CFP2-100G-ER4: Drop-In Alternatives We Stock
Looking for a replacement for the CFP2-100G-ER4 (CFP2-100G-ER4 - Cisco 100Gb/s 100GBase-ER4 Single-Mode 40km 1310nm LC Connector CFP2 Transceiver Module)? 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 CFP2-100G-ER4
| SKU | CFP2-100G-ER4 |
|---|---|
| Product | CFP2-100G-ER4 - Cisco 100Gb/s 100GBase-ER4 Single-Mode 40km 1310nm LC Connector CFP2 Transceiver Module |
| Stock status | In Stock |
| Detail page | View CFP2-100G-ER4 › |
Drop-in replacements for CFP2-100G-ER4
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.
CFP-100G-LR4 - Cisco 100Gb/s 100GBase-LR4 Single-Mode Fiber 10km 1310nm Duplex LC Connector CFP Transceiver Module
SKU: CFP-100G-LR4
Price: $1,358.86
QSFP-100G-LR4-S - Cisco 100Gb/s 100GBase-LR4 Single-Mode Fiber 10km 1310nm Duplex LC Connector QSFP Transceiver Module
SKU: QSFP-100G-LR4-S
Price: $1,789.47
QSFP-100G-PSM4-S - Cisco Single-Mode 100Gbps 100GBase-PSM4 Fiber 500m 1310nm MPO-12 Connector QSFP Transceiver Module
SKU: QSFP-100G-PSM4-S
Price: $1,645.93
CFP-100G-LR4-RF - Cisco 100Gbps 100GBase-LR4 Single-mode Fiber 10km 1310nm Duplex LC Connector CFP Transceiver Module
SKU: CFP-100G-LR4-RF
Price: $2,576.01
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
GLC-BX-U-40KM - Cisco 1Gbps 1000Base-BX-U Single-mode Fiber 40km 1310nmTX/1490nmRX LC Connector SFP Transceiver Module
SKU: GLC-BX-U-40KM
Price: $145.87
QSFP-100G-CWDM4-S - Cisco 100Gb/s 100GBase-CWDM4 Single-Mode Fiber 2km 1330nm Duplex LC Connector QSFP Transceiver Module
SKU: QSFP-100G-CWDM4-S
Price: $1,079.46
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-LH-SM-40 - Cisco 1Gbps 1000Base-LX/LH Single-Mode Fiber 40km 1310nm Duplex LC Connector SFP Transceiver Module
SKU: GLC-LH-SM-40
Price: $92.59
GLC-EX-SM - Cisco 1.25Gbps 1000Base-EX Single-Mode Fiber 40km 1310nm Duplex LC Connector SFP Transceiver Module
SKU: GLC-EX-SM
Price: $132.80
GLC-FE-100EX-RF - Cisco Single-Mode 100Mbps 100Base-EX Fiber 40km 1310nm Duplex LC Connector SFP Transceiver Module
SKU: GLC-FE-100EX-RF
Price: $140.17
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.