Best in 7 days
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Ships within 48 hours · Estimated delivery Sep 4 - Sep 9
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For Your Every Summer RSVP, with Code: SUMMER15
Description
2.5Gbps SFP 1550nm Optical Transceiver, 40km LC ReachST OC48 40B 2. 488Gbps SFP Optical Transceiver, 40km Reach Features Up to 2. 488Gb s bi directional data links 1550nm DFB laser and APD photodetector for 40km transmission Compliant with SFP MSA and SFF 8472 with duplex LC receptacle Digital Diagnostic Monitoring: Internal Calibration or External Calibration Compatible with RoHS +3. 3V single power supply Operating case temperature: Standard : 0 to +70C Extended : 20 to +85C Applications SDH STM 16
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.0 ★★★★★
Based on 88 reviews
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Product Reviews
★★★★★ 5
long lasting!
Size: Medium, Color: Black/Assorted
literally my favorite sock i will buy forever. they just started busting through after 6 years and i wear them a lot
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Reviewed in the United States on November 13, 2025
★★★★★ 5
Good quality
Size: Medium, Color: Black/Assorted
Comfy and sturdy
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Reviewed in the United States on January 27, 2025
★★★★★ 5
Favorite socks
Size: Medium, Color: Black/Assorted
These are my go to socks! Love these. Great towards sweat and different weather temperatures. Mostly use for working out and love them. Will be getting more!
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Reviewed in the United States on April 9, 2024
★★★★★ 5
Good all around sock
Size: Large, Color: (498) Coyote / Coyote / White
Great fitting and lasting boot sock. Comfortable, lasting sock good for boots or daily wear. Warm when it needs to be warm and cool when it needs to be cool.
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Reviewed in the United States on December 2, 2025
★★★★★ 5
Great socks
Size: Large, Color: (002) Black / Black / Castlerock
These are the only socks I’ll wear when working. They are so soft and comfortable. They are thick and heavy duty, and don’t wear fast. The fit snug and perfect. Good warm with a little compression for being on your feet all day.
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Reviewed in the United States on September 1, 2025
