Best in 7 days
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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23
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Description
SFP-10G-ER - Cisco 10GB SFP+ 10Base ER ModuleCisco SFP 10G ER 10GBASE ER SFP+ (1550 nm, 40 km, SMF) What it is: A 10 Gbps SFP+ optical transceiver for single mode fiber (SMF) that runs 10GBASE ER EW at 1550 nm and reaches up to 40 km on G. 652 fiber. Uses a duplex LC connector and supports DOM DDM (digital diagnostics). Why buyers pick SFP 10G ER (plain English) Long haul 10G without moving to DWDMgreat for campus, metro rings, and stretched DC links up to 40 km. Standard SFP+ footprint: drops
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.4 ★★★★★
Based on 614 reviews
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Product Reviews
★★★★★ 5
Amazing socks......
Size: Large, Color: (100) White / White / Black
They are Great...... Great price compared to store prices, not to thick or thin, they stay up where they belong- no sliding down under the heel, they wash up amazingly, cushion and comfort, no shrinkage, moisture wicking, feel so good on........
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Reviewed in the United States on January 22, 2026
★★★★★ 5
Great socks
Size: Large, Color: (001) Black / Black / White
Great socks. Very comfortable. Use these socks for work. I walk up to 10 miles in 8 hours at work and these socks stay soft and in place when I get home
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Reviewed in the United States on December 26, 2025
★★★★★ 5
Good sock
Size: Large, Color: (100) White / White / Black
I love this socks.
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Super Comfortable and Great Quality!
Size: Medium, Color: (001) Black / Black / White
These Under Armour socks are hands down some of the best I’ve ever worn. They are incredibly soft, breathable, and provide just the right amount of cushioning for all-day comfort. Whether I’m working out, running errands, or just lounging around, they feel great on my feet.
The fit is perfect—not too tight, but snug enough to stay in place without slipping down. Plus, they hold up well after multiple washes without losing their shape or softness.
If you’re looking for high-quality, comfortable socks that feel amazing to wear, these are definitely worth it. Highly recommend!
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Reviewed in the United States on February 28, 2025
★★★★★ 4
Good sock, size is a little big
Size: Large, Color: (100) White / White / Black, Size: Large, Color: (100) White / White / Black
Good quality material and fairly thick. Size large for a 9.5 shoe is a little big for the foot portion as the heel sits too high but the overall length is good.
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Reviewed in the United States on May 17, 2026
