Replacement for 39481: Drop-In Alternatives We Stock
Looking for a replacement for the 39481 (39481 - Cables To Go 40Gbps 40GBase-SR4 Multi-mode Fiber 850nm Wavelength Fiber Optic QSFP+ 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 39481
| SKU | 39481 |
|---|---|
| Product | 39481 - Cables To Go 40Gbps 40GBase-SR4 Multi-mode Fiber 850nm Wavelength Fiber Optic QSFP+ Transceiver Module |
| Current price | $113.68 |
| Stock status | In Stock |
| Detail page | View 39481 › |
Drop-in replacements for 39481
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.
QSFP40GSR4AO - Addonics 40Gbps 40GBase-SR4 Multi-mode Fiber 850nm Wavelength Fiber Optic QSFP+ Transceiver Module
SKU: QSFP40GSR4AO
Price: $675.03
39478 - Cables To Go 2Gbps 1000Base-SX Multi-mode Fiber 500m 850nm Transmitter Wavelength LC Connector SFP Transceiver Module
SKU: 39478
Price: $112.89
SBCEFCSWFS4 - Intel Short Wavelength 4Gbps Multi-mode Fiber 850nm Fiber Channel Duplex LC Connector SFP (mini-GBIC) Optical Transceiver Module
SKU: SBCEFCSWFS4
Price: $202.18
V23848-M305-C56W - Infineon 2Gbps 1000Base-SX Multi-mode Fiber Wavelength 850nm 550m SFP (mini-GBIC) Transceiver Module
SKU: V23848-M305-C56W
Price: $78.00
WLC-SFP-SX - Juniper 1Gbps 1000Base-SX Duplex LC Connector Short Wavelength Multi-mode Fiber 850nm LC Transceiver Module
SKU: WLC-SFP-SX
Price: $116.04
MTB-SR - Planet 10Gbps Multi-mode Fiber 300m 850nm Wavelength LC Connector SFP+ Transceiver Module
SKU: MTB-SR
Price: $244.50
MTB-XSR - Planet 10Gbps Multi-mode Fiber 300m 850nm Wavelength LC Connector XFP Transceiver Module
SKU: MTB-XSR
Price: $346.41
TN-X2-10GB-SR - Transition 10Gbps 10GBase-SR Multi-mode Fiber 400m 850nm Wavelength Duplex SC Connector X2 Transceiver Module
SKU: TN-X2-10GB-SR
Price: $1,204.62
39456 - Cables To Go 10Gbps 10GBase-LR Single-mode Fiber 1310nm Wavelength Duplex SC Connector X2 Transceiver Module
SKU: 39456
Price: $848.72
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.