Safe Checkout
Secure Payments
Fast Delivery
Order Today
Free Shipping
Across the US
Easy Returns
Hassle-Free
StarTech QSFP40LR4ST 1310nm Transceiver
- Data Rate: 40Gb/s
- Form Factor: QSFP+ (Quad Small Form-Factor Pluggable Plus)
- Interface: 40GBASE-LR4 Ethernet
- Wavelength: 1310nm (single wavelength)
- Fiber Type: Single-Mode Fiber (SMF)
- Maximum Reach: 10 km
- Connector Type: Duplex LC
Free U.S. Ground Shipping
Typically 1-2 handling + 3-7 transit days
Purchase orders accepted
For government, enterprise, data center, and small business customers.
Bulk Purchase Inquiry
Volume pricing and availability
Product Overview
The StarTech QSFP40LR4ST is a 40Gb/s QSFP+ transceiver module designed for long-reach applications. It operates at a wavelength of 1310nm and is intended for use with single-mode fiber (SMF). This transceiver enables high-speed data transmission over extended distances.
Technical Information
| Product Type | Transceiver Module |
| Brand | StarTech |
| Model | QSFP40LR4ST |
| Data Rate | 40Gb/s |
| Form Factor | QSFP+ |
Additional Specifications
| Fiber Type | Single-Mode Fiber (SMF) |
| Reach | 10 km |
| Wavelength | 1310nm |
| Connector | Duplex LC |
Product Description
The StarTech QSFP40LR4ST is a high-performance QSFP+ (Quad Small Form-Factor Pluggable Plus) optical transceiver module engineered for 40 Gigabit Ethernet (40GbE) connectivity over long distances. The 'LR4' in its designation signifies that it operates according to the 40GBASE-LR4 standard, which uses four different wavelengths within the 1310nm band (typically 1270nm, 1290nm, 1310nm, and 1330nm) to transmit data over a single pair of single-mode fibers. This WDM (Wavelength Division Multiplexing) approach allows for a total aggregate bandwidth of 40Gbps. This transceiver is specifically designed for long-reach applications, capable of transmitting data up to 10 kilometers (approximately 6.2 miles) over standard single-mode fiber optic cabling. This makes it an ideal solution for interconnecting network equipment in large data centers, connecting different buildings within a campus network, or for metropolitan area network (MAN) deployments where extended reach is required. The use of single-mode fiber is essential for maintaining signal integrity over these distances. The QSFP40LR4ST features a duplex LC connector, which is the standard interface for fiber optic connections. As a QSFP+ module, it is hot-swappable, allowing for seamless integration and replacement without disrupting network operations. StarTech provides these transceivers to offer a compatible and cost-effective option for network infrastructure, enabling high-bandwidth communication across significant distances.
