Replacement for 6GK5991-1AF00-8AA0: Drop-In Alternatives We Stock
Looking for a replacement for the 6GK5991-1AF00-8AA0 (6GK5991-1AF00-8AA0 - Siemens Scalance X Accessory 100MB/s LC Port Optical Single-Mode Transceiver)? 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 6GK5991-1AF00-8AA0
| SKU | 6GK5991-1AF00-8AA0 |
|---|---|
| Product | 6GK5991-1AF00-8AA0 - Siemens Scalance X Accessory 100MB/s LC Port Optical Single-Mode Transceiver |
| Current price | $278.53 |
| Stock status | In Stock |
| Detail page | View 6GK5991-1AF00-8AA0 › |
Drop-in replacements for 6GK5991-1AF00-8AA0
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.
6GK5991-1AD00-8AA0 - Siemens Scalance X 100MB/s LC Multimode Optical Transceiver
SKU: 6GK5991-1AD00-8AA0
Price: $293.26
JC875A - HP X126 1Gb/s SFP LC LX SM 10km 1310nm Transceiver for Optical Network Data Networking 1 LC 1000Base-LX Network Optical Fiber Single-mode Giga
SKU: JC875A
Price: $105.26
J9099B - HP ProCurve X112 100Mb/s 100Base-BX-D Single-mode Fiber 10km 1550nmTx/1310nmRx LC Connector SFP (Mini-GBIC) Transceiver Module
SKU: J9099B
Price: $96.82
J9099-61101 - HP ProCurve X112 100Mb/s 100Base-BX-D Single-mode Fiber 10km 1550nmTx/1310nmRx LC Connector SFP (Mini-GBIC) Transceiver Module
SKU: J9099-61101
Price: $105.59
SFP-100LX-20-ACC - Accortec 100Mb/s 100Base-LX Single-Mode Fiber 20km 1310nm LC Connector SFP Transceiver Module for ZyXEL Compatible
SKU: SFP-100LX-20-ACC
Price: $124.45
NTSFP-FXE-15-ACC - Accortec 100Mb/s 100Base-FX Single-Mode Fiber 15km 1310nm LC Connector SFP Transceiver Module for Ciena Compatible
SKU: NTSFP-FXE-15-ACC
Price: $124.49
E1MG-100FX-LR-OM - Brocade 100Mb/s OC-3/STM-1 LR-1 100Base-FX Single-Mode Fiber 40km 1310nm Duplex LC Connector SFP Transceiver Module
SKU: E1MG-100FX-LR-OM
Price: $124.51
SFP-FE-LX-SM1310-ACC - Accortec 100Mb/s 100Base-LX Single-Mode Fiber 10km 1310nm LC Connector SFP Transceiver Module
SKU: SFP-FE-LX-SM1310-ACC
Price: $124.53
J9099BR - HP ProCurve X112 100Mb/s 100Base-BX-D Single-mode Fiber 10km 1550nmTx/1310nmRx LC Connector SFP (Mini-GBIC) Transceiver Module
SKU: J9099BR
Price: $134.01
SFP-100-SM40-ACC - Accortec 100Mb/s 100Base-LH Single-Mode Fiber 40km 1310nm Duplex LC Connector SFP Transceiver Module for Alcatel-Lucent Compatible
SKU: SFP-100-SM40-ACC
Price: $150.42
NTSFP-FXE-40-ACC - Accortec 100Mb/s 100Base-FX Single-Mode Fiber 40km 1310nm LC Connector SFP Transceiver Module for Ciena Compatible
SKU: NTSFP-FXE-40-ACC
Price: $150.51
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.