Count on powerful performance & cost-effective 40 Gigabit Ethernet connections over multimode fiber with this QSFP+. This Cisco compatible 40 G Base QSFP+ (Quad Small Form-Factor Pluggable) is engineered by Star Tech.com to deliver what you want most in your network connections: reliable performance. Built to exacting specifications & fully tested to ensure maximum performance, you can install this high-quality fiber transceiver module into Cisco networking devices that support the Cisco QSFP-40G-SR4 QSFP+ transceiver module, as well as other major brands of networking equipment. With powerful four-lane performance, this 40 G Base-SR4 QSFP+ delivers 40 Gigabit connectivity over multimode fiber with an optical wavelength of 850nm & a range of up to 150 m (492 ft.). It provides a dependable & cost-effective way to add, replace or upgrade the ports on your networking equipment. This 40 G Base-SR4 QSFP+ is manufactured by Star Tech.com to meet or exceed OEM specifications & comply with the industry's MSA (Multi-Source Agreement) standards. Committed to the highest standards of quality, Star Tech.com provides an extensive range of networking products including copper & fiber network cards, fiber media converters, Ethernet switches & wireless products. The 40 Gigabit multimode QSFP+ is engineered to the highest quality standards & is 100% Cisco compatible, equivalent to the Cisco QSFP-40G-SR4 optical transceiver. The Star Tech.com QSFP+ transceiver module is configured & fully tested to ensure it works seamlessly with Cisco or other major brands of networking equipment. You can be assured that the use of Star Tech.com QSFP+ products should not affect the warranty protection of your networking equipment. Delivering both convenience & scalability, this fiber QSFP+ transceiver is fully hot-pluggable, which enables you to install it without interrupting network traffic or having to reboot your equipment. It provides a versatile & cost-effective solut