Replacement for NTK591LB-ACC: Drop-In Alternatives We Stock
Looking for a replacement for the NTK591LB-ACC (NTK591LB-ACC - Accortec 1Gb/s 1000Base-CWDM Single-Mode Fiber 40km 1470nm LC Connector SFP Transceiver Module for Ciena Compatible)? 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 NTK591LB-ACC
| SKU | NTK591LB-ACC |
|---|---|
| Product | NTK591LB-ACC - Accortec 1Gb/s 1000Base-CWDM Single-Mode Fiber 40km 1470nm LC Connector SFP Transceiver Module for Ciena Compatible |
| Current price | $451.53 |
| Stock status | In Stock |
| Detail page | View NTK591LB-ACC › |
Drop-in replacements for NTK591LB-ACC
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.
NTK591NB-ACC - Accortec 1Gb/s 1000Base-CWDM Single-Mode Fiber 40km 1510nm LC Connector SFP Transceiver Module for Ciena Compatible
SKU: NTK591NB-ACC
Price: $451.53
NTK591MB-ACC - Accortec 1Gb/s 1000Base-CWDM Single-Mode Fiber 40km 1490nm LC Connector SFP Transceiver Module for Ciena Compatible
SKU: NTK591MB-ACC
Price: $451.53
SFP-1GB-CW-49-40-ACC - Accortec 1Gbps 1000Base-CWDM Single-mode Fiber 40km LC Connector SFP Taa Transceiver Module
SKU: SFP-1GB-CW-49-40-ACC
Price: $451.53
SFP-1GB-CW-35-40-ACC - Accortec 1Gbps 1000Base-CWDM Single-mode Fiber 40km LC Connector SFP Taa Transceiver Module
SKU: SFP-1GB-CW-35-40-ACC
Price: $451.53
NTK591SB-ACC - Accortec 1Gb/s 1000Base-CWDM Single-Mode Fiber 40km 1590nm LC Connector SFP Transceiver Module for Ciena Compatible
SKU: NTK591SB-ACC
Price: $451.53
SFP-1GB-CW-29-40-ACC - Accortec 1Gbps 1000Base-CWDM Single-mode Fiber 40km LC Connector SFP Taa Transceiver Module
SKU: SFP-1GB-CW-29-40-ACC
Price: $451.53
NTK592NGE5-ACC - Accortec 1Gbps 1000Base-CWDM Single-mode Fiber 40km 1510nm LC Connector SFP Transceiver Module
SKU: NTK592NGE5-ACC
Price: $451.49
SFP-10GCWER-57-ACC - Accortec 10Gb/s 10GBase-ER CWDM Single-Mode Fiber 40km 1570nm Duplex LC Connector SFP+ Transceiver Module
SKU: SFP-10GCWER-57-ACC
Price: $3,303.76
SFP-10GCWER-51-ACC - Accortec 10Gb/s 10GBase-ER CWDM Single-Mode Fiber 40km 1510nm Duplex LC Connector SFP+ Transceiver Module
SKU: SFP-10GCWER-51-ACC
Price: $3,303.79
SFP-10G-DW-1590-ACC - Accortec 10Gb/s 10GBase-CWDM Single-Mode Fiber 40km 1590nm LC Connector SFP+ Transceiver Module
SKU: SFP-10G-DW-1590-ACC
Price: $3,303.79
SFP-10GCWER-59-ACC - Accortec 10Gb/s 10GBase-ER CWDM Single-Mode Fiber 40km 1590nm Duplex LC Connector SFP+ Transceiver Module
SKU: SFP-10GCWER-59-ACC
Price: $3,303.79
SFP-10GCWER-55-ACC - Accortec 10Gb/s 10GBase-ER CWDM Single-Mode Fiber 40km 1550nm Duplex LC Connector SFP+ Transceiver Module
SKU: SFP-10GCWER-55-ACC
Price: $3,303.83
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.