Reliable & Flexible Customer Support for Your Fiber Optic Transceivers

Updated on Oct 25, 2021 by


Various Product Types

FS provides you with a diverse range of fiber optic transceivers, be they SFP, SFP+, SFP28, QSFP+, QSFP28, CFP, QSFP-DD, etc. You are sure to find the right optical transceiver to meet your needs for 1G/10G/25G/40G/100G/400G/800G networks. All of them have gone through rigorous testing and proven to be high-quality, easy-to-use, and durable. Besides, FS optical transceivers are expected to be used in various applications, such as data centers, high-performance computing networks, enterprise core and distribution layer applications.

FS even offers a self-developed multi-functional transceiver tool kit — FS Box, which works with FS optical transceivers and DAC/AOC cables. It is designed to achieve multiple functions such as online configuration, diagnosing and troubleshooting, wavelength tuning for tunable transceivers, box pro, and so on. With its instant online platform fsbox.com and a wide range of configuration choices, FS Box V3 could help engineers configure in a timely and effective way.

Abundant Inventory

With warehouses in multiple countries and regions, including Germany, the United States, Asia, Australia, and Russia, FS has the luxury of abundant storage space for a large inventory of optical transceivers. Through tight inventory control, FS manages to ensure we don't run out of key optical transceivers and maintain a proper product inventory.

Same-day Shipping

FS uses the best carriers in the business to make sure your order gets to you on time. Orders in stock in US warehouses will be shipped within 24 hours on working days.

FREE SHIPPING on Orders over US$ 79

Any items with “Free Shipping” listed on the product page are eligible for the free shipping service. Orders over US$ 79 can enjoy our free shipping service.

Oversized or heavy items (without “Free Shipping” listed on the product page) are not included in this offer for free shipping. Zip codes in Alaska, Hawaii, Puerto Rico and APO/FPO military may be subject to shipping charges.

Sample Service

Customers can apply to sample our optical transceivers before purchasing. Based on FS sample service policy and the actual inquiries of our customers, we will consider whether the trial use is free or not, and the timing and amount of samples for trial use. For the specifics of trial use, you can consult your account manager. Anyway, we are delighted to offer you a low-risk chance to buy our products, and we expect to win your support for our optical transceivers.



Tailor-made Optical Transceivers

If you cannot find the right optical transceiver that best matches your needs, FS is here to offer you a customized product. We have delivered many customized products for Datacom, Telecom, and Industrial Ethernet. We can make a single custom product or a large quantity of products for customers who require custom optical transceivers. All of our custom optical transceivers, DAC & AOC cables are produced with high-quality components and provided at the most competitive price.

Free & Fast Technical Support

Our dedicated customer support offers 24/7 technical assistance. If you have any questions about our products, such as how to select suitable optical transceivers for your switches, how to choose between different optical modules, what to do when typical technical glitches occur, or how to place an order, don't hesitate to let us know. We aim to provide free and tailored solutions and services for your businesses.

Flexible Payment Options

We offer you multiple payment options to ensure you a hassle-free ordering experience.


Redirect to PayPal via a secure online connection, and pay with the balance of your paypal account or Credit/Debit Card.

Credit/Debit Card

Pay online with Visa, Master, American Express, Discover, Diners, and JCB Card.

Wire/ACH Transfer

Transact using a financial institution wire service.

Net Terms

Pay for purchases with an approved Net Terms account in FS, like Net 30 account, no fees attached.


Pay with an Electronic Check online at Checkout page, or send a check to us for you order.

Order by Phone

Call our customer service center during office hours to complete order payment via Credit Card.

United States +1 (888) 468 7419
Canada +1 (647) 243 6342
Mexico +52 (55) 3098 7566
Australia +61 (3) 9693 3488
New Zealand +64 (9) 985 3566
Germany +49 (0) 8165 80 90 517
Russia +7 (499) 643 4876
Singapore +(65) 6443 7951
United Kingdom +44 (0) 121 716 1755

Transparent Logistics

It is no longer about where the order is but where the specific product is. With our transparent and automated logistic system, you can check out your product status quickly and easily. Moreover, the order history and track shipping status are available with just a simple click on your Account Center. The whole process is transparent, from when the order is placed to when you get your optical transceivers in your hands. You will be promptly notified if any problems occur.



Returns & Refunds

FS wants you to be thrilled with our optical transceivers. However, if you need to return an item or ask to get a refund, we're here to help.

For all fiber optic transceivers and DAC & AOC cables, you have 30 calendar days to return an item from the date you received it, which means the request must be submitted within the return/exchange window. Refunds will be processed after FS receives and inspects the returned items. It will take about 5 business days to receive the refund. As for exchanges, if the replacement units are in stock, it can be shipped within 1 business day. If the replacement units are out of stock, your account manager will inform you once it is shipped.


We offer you a warranty period of five years for the purchase of almost every optical transceiver or DAC & AOC cable. FS warranty covers only defects arising under normal use and does not include malfunctions or failures resulting from misuse, abuse, neglect, alteration, problems with electrical power, usage not in accordance with product instructions, acts of nature, or improper installation or improper operation or repairs made by anyone other than FS or an FS authorized service provider. Check FS Products Warranty for detailed info.



Q: How much will I be charged for shipping?

A: Shipping cost is charged per the delivery options you choose on the check out page. If you are located within continental U.S., you will enjoy Free Shipping on orders over US$79.

Q: What happens if my parcel is damaged upon arrival or goes missing?

A: If you have already received your product and find that it is damaged, please take photos or videos on site and send them to us. FS will contact with the carrier to resolve the issue as quickly as possible. If the damage is caused during shipping, your account manager will guide you to return damaged ones to us for an exchange or refund. More about return service, you may refer to our Return Policy.

If you find that your parcel is missing, please inform your account manager right away. FS will guide you about the remedy procedures accordingly.

Q: How can I get the help?

A: We are here to help 24/7. For any questions, you can refer to our FAQ for help, or Contact Us.

Q: How can I process the return if I'm qualified for free returns?

A: You can print a free return shipping label on the "Return Detail" page after the return request is approved. If you don't find that shipping label, please contact your account manager to get it.

Q: Do I need to pay the return shipping cost or customs?

A: If the return is due to an error on FS (you received an incorrect or defective item, etc.), FS will cover the shipping cost. Otherwise, the return shipping cost would be borne by you.

Usually, international orders may cause customs duties on import and export. If the items are returned from abroad, and the return is due to our error (you received an incorrect or defective item, etc.), we will cover the customs duties.

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