400GBASE-FR4 QSFP-DD PAM4 1310nm 2km DOM LC SMF Optical Transceiver Module

1.How to reset password if forgot?

Please click "Forgot your password? " to reset your password. We will send you an email to reset your password.

2.What should I do if I want to change my registered account ?

Please modify your registered email in your Account, which is located in Account Setting--Email ,. After entering your correct email, you will get an email from Commbroad with verification code. Please enter the code, then the email will be changed successfully.

3.How to unsubscribe from Commbroad?

The "UNSUBSCRIBE" button is at the bottom of the system emails. If you don't want to get these emails, please click to unsubscribe.

1.How can I check the status of my order?

You can check your order status in your Account or contact your sales representative directly for the order status update.

2. Why my order is still in the processing stage after payment completed several days？

If your order is still in the processing stage 48 hours after payment, it means that some items in your order are out of stock. We usually need 2-5 days to restock these items. If you still have concerns about your order, please contact us to check for you directly via Live Chat or email to sales@commbroad.com.

3. Can I modify my shipping address or method?

Once the order has been packaged, you cannot change the shipping address. If you have not completed payment, you will need to cancel the order and re-order the product with the correct address.

If you have already completed payment, please contact your account manager or online Live Chat service team to modify.

4.How do I change my order?

If you have not paid for the order, please cancel the order directly and place a new order.

If you have already paid, please contact your sales representative to change. We could help you to modify the orders or place a new order .

Please note that you could only change before the order has not been proceed and shipped out.

5.How do I cancel an order?

Before your order is shipped out, you can follow the below steps to cancel it:

Step 1: Sign into My Orders and find your order

Step 2: Click Cancel Order

Step 3: Select a cancellation reason in the pop-up box and submit your request

Note:

1. You can only cancel an order before the order has not been proceed and shipped out.

2. If you have already paid for your order, the cancellation request needs to be approved by Commbroad.

1.How long will I receive my order?

The lead time included the products lead time and the shipping time.

If the products in stock,we will ship within 24 hours after the order confirmed.

If the products are not in stock, we usually need 2-5 days to prepare your shipment.

For some special products, the lead time might be longer, it is better to confirm lead time before you confirm an order.

The shipping time is different when the destination is different.

We usually use DHL, UPS, Fedex to ship international orders. it usually takes 2-5 days to arrive your country.

2.Do you offer free shipping?

Yes, we offer a free shipping policy for Orders Over US$199 To U.S. And Asia Area for the designated products.

3.How to calculate the shipping cost?

Our default mode of delivery is DHL, UPS, Fedex, TNT, etc. When you choose the mode of transport, the system will automatically calculate the cost of transport for your reference.

4.Do I need to pay the custom tax?

In some cases, there will be VAT or other taxes, like customs duties or fees levied by your destination country.

1. We have no control over these charges and cannot predict the amount.

2. Customs and taxation policies vary widely from country to country. You should refer to your local custom laws.

3. When customs clearance procedures are required, there might be delays beyond our estimated delivery date. Additional charges for taxes or customs clearance must be paid by the recipient.

5.How can I track my package after they have been shipped?

You can track your package according to the tracking number we provide.

After delivery, we will update your carrier (DHL,UPS,Fedex,TNT,ect) tracking order number to your order system. You can also consult our customer service representative. When the shipping order is generated, we will notify you at the first time.

For standard stock products (consumables and customized excluded), we offer a standard 30-day return & refund.

For Consumable and customized no stock product, unless DOA (defective on arrive), we will not be able to provide a refund and exchange. For custom non-stock products, we offer free maintenance services within the warranty period.

2.Who is responsible for return shipping fee?

Divide into different situations：

Commbroad is responsible for freight charges, tariffs and other charges arising from the return of goods if the return is caused by the product's own problems.

If the return is due to the customer's own reasons, the customer is responsible for the cost of the return such as freight and tariff.

4. How to return the products?

If there is any broken, not as described or wrong item (s)/parcel, please follow below steps to cooperate with the resolving process:

1. Apply for return online first.

2. Take some clear photos of the exact problem.

3. Upload them into your return application (Refer to Return Policy).

4. We will audit your application and give you a satisfying solution.

Note: Applying return online is the key point for us the deal with this problem properly.

1.What is the lead time of the products I ordered?

When you place order,you could see the products availability.

If it is in stock, we usually deliver the goods within 24 hours after the order is confirmed. It will take you about 2-5 days to receive the products.

If the product is not in stock, you could ask the delivery date with our sales representative before ordering, or after placing the order, we will update the estimated delivery time to the system or notify you by email.

After the order is shipped, it will take about 2-5 days to receive the goods.

2.Can i get free samples before I make big quantity purchase?

Yes, you can get a sample after the test sample application is approved. You can return it after evaluation or pay after you test the samples.

3.Do you support OEM/ODM?

Yes, we can provide customized services, such as customized labels and packaging.

Our engineer team can also develop customized software and hardware products for you according to your specific requirement.

4.Is there a discount if you buy large quantities?

Yes, When buying in large quantities, you can receive a discount and save even more. For VIP customer,  you could enjoy better payment terms, very good discount of product pricing, one by one service by our professional sales and technical support team.

5.Do you support technical support?

Yes,we could support technical support for pre-sale and after sale.

Any questions, feel free to contact us before or after you buy.