Arista 1GB Transceivers - SFP - Refurbished, Used, New

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Arista 1G SFP transceivers connect Arista switches to gigabit devices over copper, multimode fiber or single-mode fiber. They are used for 1G server and appliance ports, out-of-band and management links, and for tying older 1G equipment into a 10G or 25G access switch whose SFP+ or SFP28 ports also accept 1G modules. This collection covers the three common Arista 1G parts: SFP-1G-T for RJ45 copper, SFP-1G-SX for short multimode fiber runs, and SFP-1G-LX for single-mode fiber up to 10 km. NetworkTigers sells these optics refurbished, used and new, and every transceiver is tested before it ships so it links up when it arrives.

Arista 1G SFP transceivers by reach and media

Part number	Reach, fiber and connector	Shop
SFP-1G-T	1000BASE-T over Cat5e or better copper, RJ45 connector, up to 100 m	SFP-1G-T
SFP-1G-SX	1000BASE-SX, 850 nm, multimode fiber, LC duplex connector, up to 550 m on OM2 and shorter on older 62.5 micron fiber	SFP-1G-SX
SFP-1G-LX	1000BASE-LX, 1310 nm, single-mode fiber, LC duplex connector, up to 10 km	SFP-1G-LX
Copper 1G SFPs	RJ45 modules for patching to switches, servers and appliances that only have copper ports	SFP-1G-T
Multimode 1G SFPs	Short fiber runs inside a building or data hall, orange OM1/OM2 or aqua OM3/OM4 patch cords	SFP-1G-SX
Single-mode 1G SFPs	Campus and between-building fiber, yellow OS1/OS2 patch cords	SFP-1G-LX
All Arista 1G SFPs	Every 1G SFP on the page in one search	SFP-1G
Related Arista optics	Faster Arista transceivers and copper cables	All Arista optics \| 10G SFP+ \| 25G SFP28 \| DAC cables

Which Arista 1G SFP do I need?

Match the module to the cable already in the wall or the tray. Copper Cat5e or Cat6 to a device with an RJ45 port calls for the SFP-1G-T, which is also the only choice when the far end is a server NIC or appliance with no SFP cage. Multimode fiber, usually orange or aqua jacketed with LC ends, calls for the SFP-1G-SX, good for runs within a building up to a few hundred meters. Single-mode fiber, yellow jacketed, calls for the SFP-1G-LX for links up to 10 km between buildings or across a campus. Both ends of a fiber link must use the same type; an SX will not talk to an LX. Then check the switch port. Most Arista SFP+ and SFP28 ports can be set to 1G to accept these modules, but a few platforms and port ranges do not support 1G, so confirm the specific switch model and port before you order. If you need the module to show light levels and temperature in the switch CLI, the fiber modules report digital diagnostics; copper modules generally do not.

Frequently asked questions

Can I use an SFP-1G-T in a 10G SFP+ port for a 1G server?
Usually, yes. Most Arista SFP+ ports accept the SFP-1G-T and run the link at 1000 Mb/s. The module runs warmer than a fiber SFP and draws more power, so leave an empty cage between copper modules if you are filling a whole row of ports with them.

Will the SFP-1G-T negotiate 100 Mb/s to an old device?
Support for 10/100 speeds on a copper SFP depends on the switch platform and software release. Treat the module as a 1000BASE-T part and plan for a gigabit far end; if you need 100 Mb/s, tell us the switch model and we will check.

Do I need Arista-branded optics in an Arista switch?
Arista switches accept the Arista-coded modules on this page without any configuration. Modules coded for other vendors may link up but can produce warnings in the logs, so Arista-coded parts are the clean choice for a production switch.

NetworkTigers has sold enterprise network equipment since 1996. Every transceiver carries the NetworkTigers 365-day warranty. Need a quantity for a switch refresh? Ask us for a quote.