All offered products come with a 1 (one) year warranty. The warranty does not cover consumable items and materials (batteries, power supplies, etc. ), nor does it cover repair or replacement of parts naturally worn during operation. All Cisco warranties apply to the end customer or original owner (the individual who purchased the product for their own use), also referred to as the end user, and are not transferable. Cisco warranties are subject to and provided only on the terms and conditions as set out in the warranty version. Cambium Networks warrants (“Product Warranty” or “Standard Warranty”) the Cambium branded hardware products (“Products”) against defects in material and workmanship, when used under normal conditions and consistent with applicable Product documentation supplied with the Product for a period of ONE. Compact PoE switch with built-in UPS and smart battery charger – because your CCTV cameras and access points deserve true off-the-grid resilience. A compact 1U 400G switch built for AI clusters, storage fabrics, and high-speed aggregation, featuring four 400G QSFP56-DD ports, dual 10 Gigabit. ALL THE NETWORK HARDWARE BRANDS – ALL IN ONE PLACE! Network Craze provides both new and refurbished networking, voice and technology equipment from Cisco, Nortel, Avaya, Juniper and HP with over the top customer support and an Advanced Replacement Lifetime Warranty. Last updated on Apr 29, 2026 The QSFP28 optical transceiver module is designed for use in 100GBASE Ethernet throughput up to 100km over single mode fiber (SMF) using a wavelength of 1310nm via duplex LC connectors.