Question-led planner
Use this page when an industrial ethernet switch 5 port brief still has open choices. Each chip is a decision, not a slogan. Leave a chip blank if the cabinet survey has not answered it.
A managed five-port unit can carry VLANs, port statistics, and an alarm relay when the cell needs them. An unmanaged unit can drop the address plan when every drop is a trusted device. If you accept a substitute, require the factory to say which path changed. Wavelength and optical budget do not decide this row.
Single-mode fiber at 1310 nm can support a longer hop when the plant and the optic are designed together. Multimode fiber may suit a short room with a matched pair. Ask for transmit power, receiver sensitivity, and the optical budget on the exact SFP. An OEM-coded module may follow a host vendor policy. A compatible module may widen supply when it is checked on this switch. Dispersion matters on long single-mode runs and is a poor reason to reject a 10 m cabinet jumper.
Write 12 V, 24 V, or 48 VDC, and whether Power over Ethernet must leave the switch. 802.3af at 15.4 W and 802.3at at 30 W are different supplies. Mounting is DIN rail or a fraction of a rack unit. Ingress protection is IP30 or IP40 unless the drawing shows a harsher test. Connector mating cycle is a weak control for a switch that is installed once. It matters more if the brief includes removable optics that will be reseated.
Managed versus unmanaged: monitoring and segmentation on one side, fewer configuration steps on the other. State which side the cell needs. New versus refurbished: a clearer license trail on one side, a possible fit for discontinued mechanics on the other, after condition and warranty text are checked. Single-mode versus multimode is a third split when an uplink exists. It is not a split for an all-copper star.
Switching capacity for five 1 Gb/s ports, full duplex, is a 10 Gbps question if all ports are inside the claim. Forwarding rate near 7.4 Mpps assumes 64-byte frames at about 1.488 Mpps per 1 Gb/s port. Ask the datasheet for the frame size. Impedance stays 100 ohm on the copper PHY. Insertion loss and return loss are channel questions when the run approaches 90 m. They are minor on a 1 m patch.
Background: four copper devices stay in the cell and one uplink must reach a switch 2 km away. Process: the planner marks an industrial ethernet switch 5 port, four 1 Gb/s copper ports, one SFP, 1310 nm, single-mode, a 10 km optical-budget question, 24 VDC, and managed alarms as preferred. Result: an all-copper unmanaged alternative is refused unless the buyer drops the 2 km hop. The page does not claim the link budget is closed.
Radio terms such as gain, MIMO, channel width, frequency range, and VSWR are out of this planner. Runtime and calibration traceability belong to power shelves and meters, not to this switch, unless you add those products on a separate note. Read the inquiry cards or the unmanaged site notes when the fiber hop is absent.
List port speed, uplink, voltage, and management as open or decided. A blank cell is more useful than a guessed watt figure.
The substitute names the same port map or it is marked as a deviation. Optics, licenses, and condition stay visible. A lower port count is a different request.
Current datasheet, optic row if any, input-voltage row, and mounting drawing. Applicable FCC or safety files are requested when the destination makes them relevant. This desk does not issue those files.
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