Replacement for ONS-SI-155-L1: Drop-In Alternatives We Stock
Looking for a replacement for the ONS-SI-155-L1 (ONS-SI-155-L1 - Cisco Single-mode 155Mbps Fiber 40km 1310nm Duplex LC Connector SFP 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 ONS-SI-155-L1
| SKU | ONS-SI-155-L1 |
|---|---|
| Product | ONS-SI-155-L1 - Cisco Single-mode 155Mbps Fiber 40km 1310nm Duplex LC Connector SFP Transceiver Module |
| Current price | $757.32 |
| Stock status | In Stock |
| Detail page | View ONS-SI-155-L1 › |
Drop-in replacements for ONS-SI-155-L1
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.
ONS-SI-155-I1 - Cisco 155Mb/s OC-3/STM-1 IR-1 Single-Mode Fiber 15km 1310nm Duplex LC Connector SFP Transceiver Module
SKU: ONS-SI-155-I1
Price: $834.58
ONS-SI-622-L1 - Cisco 622Mb/s OC-12/STM-4 Single-Mode Fiber 40km 1310nm Duplex LC Connector SFP Transceiver Module
SKU: ONS-SI-622-L1
Price: $1,578.95
Cisco ONS-SE-155-1570 Single-mode 155Mbps 100Base-CWDM Fiber 120km 1570nm Duplex LC Connector SFP Transceiver Module
SKU: ONS-SE-155-1570
Price: $386.84
Cisco ONS-SE-155-1550 Single-mode 155Mbps 100Base-CWDM Fiber 120km 1550nm Duplex LC Connector SFP Transceiver Module
SKU: ONS-SE-155-1550
Price: $736.84
ONS-SE-155-1510 - Cisco 155Mb/s 100Base-CWDM OC-3/STM-1 Single-Mode Fiber 120km 1510nm Duplex LC Connector SFP Transceiver Module
SKU: ONS-SE-155-1510
Price: $964.32
ONS-SE-155-1510-RF - Cisco 155Mb/s 100Base-CWDM OC-3c/ STM-1 Single-Mode Fiber 120km 1510nm Duplex LC Connector SFP Transceiver Module
SKU: ONS-SE-155-1510-RF
Price: $1,755.03
Cisco ONS-SC+-10G-ER Single-mode 10Gbps 10GBase-ER Fiber 40km 1550nm Duplex LC Connector SFP+ Transceiver Module
SKU: ONS-SC--10G-ER
Price: $749.12
ONS-XC-10G-1570-RF - Cisco 10Gbps 10GBase-CWDM Single-mode Fiber 40km 1570nm Duplex LC Connector XFP Transceiver Module
SKU: ONS-XC-10G-1570-RF
Price: $1,455.91
ONS-XC-10G-1590 - Cisco 10Gbps 10GBase-CWDM Single-mode Fiber 40km 1590nm Duplex LC Connector XFP Transceiver Module
SKU: ONS-XC-10G-1590
Price: $1,551.25
ONS-XC-10G-1470-RF - Cisco 10Gbps 10GBase-CWDM Single-mode Fiber 40km 1470nm Duplex LC Connector XFP Transceiver Module
SKU: ONS-XC-10G-1470-RF
Price: $1,559.91
ONS-XC-10G-1470 - Cisco 10Gbps 10GBase-CWDM Single-mode Fiber 40km 1470nm Duplex LC Connector XFP Transceiver Module
SKU: ONS-XC-10G-1470
Price: $1,559.91
ONS-XC-10G-1570 - Cisco Single-Mode 10Gbps 10GBase-CWDM Fiber 40km 1570nm Duplex LC Connector XFP Transceiver Module
SKU: ONS-XC-10G-1570
Price: $1,923.43
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.