SF90D-08

SF90D-08 is a fanless Layer 2 desktop switch with eight 10/100 Mbps RJ-45 connections for small-business wired networks. Its fixed copper ports carry data without supplying endpoint power, and connecting to another switch uses an existing port rather than a dedicated uplink. Cisco 90 Series Unmanaged Switches operate without configuration, making this model a connection point rather than an administrator-controlled network edge. The discontinued SF90D-16 differs by providing 16 Fast Ethernet connections for legacy installations with a larger endpoint count. Gigabit endpoint connections and fiber uplinks are outside this model's capabilities.

1.6 Gbps switching capacity defines aggregate bandwidth, while 1.4 Mpps forwarding performance describes handling of 64-byte packets. Four hardware queues use priority queuing and weighted round-robin scheduling to handle traffic classes automatically. Store-and-forward processing rejects damaged packets instead of passing them onward. SF90D-08 supports 9216-byte jumbo frames for compatible attached equipment, with head-of-line blocking prevention supporting traffic handling under contention. These capabilities operate automatically; the unmanaged design does not provide configurable Layer 3 routing.

SF90D-08 is offered new sealed or certified refurbished; specify the condition, quantity, and required power adapter on the purchase order. Certified refurbished units are inspected and bench-tested for power-on and POST, every port linking at rated speed, and clean boot; the supplied adapter is verified to deliver its rated output. ORM Systems provides up to a 3-year extended warranty on new units or up to a 1-year warranty on certified refurbished units, with 30-day returns on either condition, terms apply; Cisco service and its original warranty ended on December 31 2020. Enterprise and volume orders accept POs, government buyers have Net-30, and regional stock and RMA coverage spans the UK, EU, US, and MEA with advance replacement.