Cisco QSFP-40GE-LR4 Compatible 40GBASE-LR4 QSFP+ 1310nm 10km Duplex LC/UPC SMF Optical Transceiver Module is capable of establishing a 40-Gbps link over OS2 single-mode fiber for distances up to 10 km. The transceiver uses a total of four CWDM lanes operating at 1271/1291/1311/1331 nm, and supports live monitoring via DOM/DDM which displays temperature, voltage, TX/RX power, and bias via I2C, providing a convenient means of adjusting the link without having to remove the transceiver module. The transceiver has a duplex LC/UPC interface for simplified patching, and a QSFP+ edge connector and hot-swap capability that provides speedy performance with little to no disruption in the field.
The transceiver is designed to be compliant with the IEEE 802.3ba 40GBASE-LR4 and QSFP+ MSA with SFF-8436/8636 management standards, and can readily fit into standard 40GbE architectural deployments. The optical system is an integrated mux/demux design which aggregates four 10G lanes ensuring latency performance is predictable and low. It will support 40GbE uplink applications into existing data center spine/leaf architectures, long-distance enterprise core architectures, and campus backbones that require long-distance solutions without the use of parallel fiber. Compatible with Cisco devices including Catalyst 3560X/3650/4500/6000/9300/9300L/9400/9500/9600/9800 and Nexus 2000/5000/6000/7000/7700/8500/9200/9300/9300X/9400X/9500/9600/9800.
Specifications
| Brand | BYXGD |
| Form Factor | QSFP+ |
| Aggregate Data Rate | 40 Gbps |
| Max Data Rate | 44.6 Gbps (4×11.2 Gbps) |
| Wavelength | 1310 nm (CWDM lanes 1271/1291/1311/1331) |
| Modulation | NRZ |
| Transmitter Type | DFB CWDM |
| Receiver Type | PIN |
| Fiber Type | OS2 SMF |
| Core Size | 9 μm |
| Connector | Duplex LC/UPC |
| Max Distance | 10 km |
| TX Optical Power | −7 to 2.3 dBm |
| Receiver Sensitivity | < −11 dBm |
| Receiver Overload | 2.3 dBm |
| Power Budget | 4 dB |
| Power Consumption | < 2.5 W (typical); ≤ 3.5 W (max) |
| Bit Error Ratio (BER) | 1E−12 |
| DDM/DOM | Supported (I2C) |
| Electrical Interface | QSFP+ 38‑pin edge connector |
| FEC | Supported |
| Operating Temperature | 0 to 70°C (32 to 158°F) |
| Hot Pluggable | Yes |
| Warranty | 5 Years |
| Return Policy | 30‑Day Free Return |
| After‑sales Support | Lifetime Technical Support |
| Protocols | IEEE 802.3ba 40GBASE‑LR4; QSFP+ MSA; SFF‑8436/SFF‑8636; OTN OTU3 (C4S1‑2D1); 40G Ethernet; Fibre Channel; SATA/SAS3; InfiniBand 40G QDR |






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