Browse our collection of high quality, reliable and authentic Computer & Peripherals in desired configuration and compatibility. Whether you want to buy a new computer or add functionality to your computer, we have it all for you.40GBase-LR4 QSFP Plus Transceiver CompatabilityDell QSFP-40G-LR4SpecificationsConnector: LCDOM: DOMForm Type: QSFP+Media: SMFReach: 10kmSpeed: 40GBaseSpeed Description: 40-GigabitTransceiver Type: LR4Wavelength: 1270nm to 1330nmWeight: 0.4 lbs- SKU: SYBA31325