A like-for-like stand-in for Arista's identically numbered module, the SFP-10G-DW-37.40 matches it on rate — 10G — and on the SFP+ form factor the cage expects. Arista hosts read the pre-written coding and treat the part as native, so the swap involves seating the module and nothing further; DDM/DOM telemetry resumes on the same interface counters the previous optic fed.
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Form Factor: SFP
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OEM Equivalent: SFP-10G-DW-37.40
Compatibility: Documented OEM compatibility (Arista published compatibility documentation): this module is accepted in 10G SFP+ ports on the 7020R Series, 7050X3 Series, 7060X Series, 720XP Series, 7280R3 Series, and 7300X3 Series. This module follows Arista's published compatibility matrix; for your exact line card or OS release, email 10.4@tenfouroptics.com and we'll confirm fit.
Tested & Proven: Every TenFour Optics part is coded, tested, and verified before shipment — see Tested & Proven.
Full MSA conformity is confirmed at the bench before release, with each unit's coding and diagnostics individually exercised. Keeping the designation identical end to end also keeps audits simple: what the purchase order says is what the chassis reports. Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. In-stock items ship same or next business day — contact 10.4@tenfouroptics.com to confirm availability and lead time.
