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-SR4 QSFP Plus Transceiver CompatabilityDell QSFP-40G-ESR4SpecificationsConnector: MPODOM: DOMForm Type: QSFP+Media: MMFReach: 400mSpeed: 40GBaseSpeed Description: 40-GigabitTransceiver Type: SR4Wavelength: 850nmWeight: 0.4 lbs- SKU: SYBA31323