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Gigabit Ethernet
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===1000BASE-EX=== 1000BASE-EX is a non-standard but industry accepted term<ref>{{cite web |title=fs SFP1G-EX-55 |url=https://www.fs.com/de-en/products/49943.html |website=FS Germany |access-date=March 30, 2020 |language=en}}</ref> to refer to Gigabit Ethernet transmission. It is very similar to 1000BASE-LX10 but achieves longer distances up to 40 km over a pair of single-mode fibers due to higher quality optics than a LX10, running on 1310 nm wavelength lasers. It is sometimes referred to as LH (Long Haul), and is easily confused with 1000BASE-LX10 or 1000BASE-ZX because the use of -LX(10), -LH, -EX, and -ZX is ambiguous between vendors. [[#1000BASE-ZX|1000BASE-ZX]] is a very similar non-standard longer-reach variant that uses 1550 nm wavelength optics.
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