Replacement for NTK591LH: Drop-In Alternatives We Stock
Looking for a replacement for the NTK591LH (NTK591LH - Nortel 1Gb/s 1000Base-CWDM Single-Mode Fiber 120km 1470nm LC Connector SFP Transceiver Module)? Pro Disk Network ships 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 NTK591LH
| SKU | NTK591LH |
|---|---|
| Product | NTK591LH - Nortel 1Gb/s 1000Base-CWDM Single-Mode Fiber 120km 1470nm LC Connector SFP Transceiver Module |
| Current price | $502.20 |
| Stock status | In Stock |
| Detail page | View NTK591LH › |
Drop-in replacements for NTK591LH
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.
AA1419017 - Nortel 1Gb/s 1000Base-CWDM Single-Mode Fibre 120km 1470nm Duplex SC Connector GBIC Transceiver Module
SKU: AA1419017
Price: $454.49
CWDM-SFP-1550-120KM - Cisco 1Gbps 1000Base-CWDM Fibre Channel Single-mode Fiber 120km 1550nm Duplex LC Connector SFP Transceiver Module
SKU: CWDM-SFP-1550-120KM
Price: $598.36
10-1453-01 - Cisco 1Gb/s 1000Base-CWDM Single-Mode Fiber 120km 1470nm Duplex SC Connector GBIC Transceiver Module
SKU: 10-1453-01
Price: $523.79
NTK591LH-ACC - Accortec 1Gb/s 1000Base-CWDM Single-Mode Fiber 120km 1470nm LC Connector SFP Transceiver Module for Ciena Compatible
SKU: NTK591LH-ACC
Price: $610.16
10-1996-01 - Cisco 155Mb/s OC-3/STM-1 CWDM Single-Mode Fiber 120km 1470nm LC Connector SFP Transceiver Module
SKU: 10-1996-01
Price: $187.18
15454-GBIC-1470 - Cisco 1Gbps 1000Base-CWDM Single-mode Fiber 120km 1470nm Duplex SC Connector GBIC Transceiver Module
SKU: 15454-GBIC-1470
Price: $740.41
NTK590LH - Nortel 1Gb/s 1000Base-CWDM Single-Mode Fiber 70km 1470nm LC Connector SFP Transceiver Module
SKU: NTK590LH
Price: $367.03
CWDM-SFP-1470 - Cisco 1Gb/s 1000Base-CWDM Single-Mode Fiber 80km 1470nm Duplex LC Connector SFP Transceiver Module
SKU: CWDM-SFP-1470
Price: $448.51
CWDM-SFP-1470-RF - Cisco 1Gb/s 1000Base-CWDM Single-Mode Fiber 80km 1470nm Duplex LC Connector SFP Transceiver Module
SKU: CWDM-SFP-1470-RF
Price: $448.51
NTK591TH - Nortel 1Gb/s 1000Base-CWDM Single-Mode Fiber 120km 1610nm LC Connector SFP Transceiver Module
SKU: NTK591TH
Price: $502.20
NTK591SH - Nortel 1Gb/s 1000Base-CWDM Single-Mode Fiber 120km 1590nm LC Connector SFP Transceiver Module
SKU: NTK591SH
Price: $502.20
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.