Replacement for QSF-503-ACC: Drop-In Alternatives We Stock
Looking for a replacement for the QSF-503-ACC (QSF-503-ACC - Accortec 40Gb/s 40GBase-LR4 Single-Mode Fiber 10km 1310nm Duplex LC Connector QSFP+ Transceiver Module for Gigamon 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 QSF-503-ACC
| SKU | QSF-503-ACC |
|---|---|
| Product | QSF-503-ACC - Accortec 40Gb/s 40GBase-LR4 Single-Mode Fiber 10km 1310nm Duplex LC Connector QSFP+ Transceiver Module for Gigamon Compatible |
| Current price | $2,643.45 |
| Stock status | In Stock |
| Detail page | View QSF-503-ACC › |
Drop-in replacements for QSF-503-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.
QSF-502-ACC - Accortec 40Gb/s 40GBase-SR4 Multi-Mode Fiber 150m 850nm MTP/MPO Connector QSFP+ Transceiver Module for Gigamon Compatible
SKU: QSF-502-ACC
Price: $631.37
544FLR-QSF - HP InfiniBand QDR/EN 10GBe 2-Port 544FLR-QSF Network Adapter
SKU: 544FLR-QSF
Price: $47.37
SFP-503-ACC - Accortec 1.25Gb/s 1000Base-LX Single-Mode Fiber 10km 1310nm Duplex LC Connector SFP Transceiver Module
SKU: SFP-503-ACC
Price: $124.42
40GB-LR4-QSFP-ACC - Accortec 40Gb/s 40GBase-LR4 Single-Mode Fiber 10km 1310nm Duplex LC Connector QSFP+ Transceiver Module
SKU: 40GB-LR4-QSFP-ACC
Price: $2,113.26
40GB-SR4-QSFP-ACC - Accortec 40Gb/s 40GBase-SR4 Multi-Mode Fiber 150m 850nm MPO Connector QSFP+ Transceiver Module
SKU: 40GB-SR4-QSFP-ACC
Price: $725.33
QSFP-40G-LR-ACC - Accortec 40Gb/s 40GBase-LR4 Single-Mode Fiber 10km 1310nm Duplex LC Connector QSFP+ Transceiver Module with DOM for Alcatel-Lucent Compatible
SKU: QSFP-40G-LR-ACC
Price: $2,397.51
QSFP-40GBASE-IR4-ACC - Accortec 40Gb/s 40GBase-IR4 Single-mode Fiber 2km 1330nm Duplex LC Connector QSFP+ Transceiver Module
SKU: QSFP-40GBASE-IR4-ACC
Price: $2,399.04
QSFP-40GBASE-PLR-ACC - Accortec 40Gb/s 40GBase-PLR4 Single-mode Fiber 10km 1310nm MPO Connector QSFP+ Transceiver Module
SKU: QSFP-40GBASE-PLR-ACC
Price: $2,419.41
QSFP-LR4-ACC - Accortec 40Gb/s 40GBase-LR4 Single-mode Fiber 10km 1331nm Duplex LC Connector QSFP+ Transceiver Module
SKU: QSFP-LR4-ACC
Price: $2,643.47
QSFP-40GBASE-LR4-ACC - Accortec 40Gb/s 40GBase-LR4 Single-mode Fiber 10km 1330nm Duplex LC Connector QSFP+ Transceiver Module
SKU: QSFP-40GBASE-LR4-ACC
Price: $2,643.51
QSFP-40G-ER4-ACC - Accortec 40Gb/s 40GBase-ER4 Single-Mode Fiber 40km 1310nm Duplex LC Connector QSFP+ Transceiver Module for Cisco Compatible
SKU: QSFP-40G-ER4-ACC
Price: $5,941.26
FTL410QE2C-ACC - Accortec 40Gb/s 40GBase-SR Multi-Mode Fiber 100m 850nm MPO Connector QSFP+ Transceiver Module
SKU: FTL410QE2C-ACC
Price: $473.68
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.