More quantity, please contact for best discount and postage 

1pcs / 20pcs 5V or 3.3V CH340C USB to TTL Serial Port ISP Download Module 51 STM32 for Micro win7 10 CH340T 50~2Mhz Module

(Support bulk orders and Custom service orders )

Working voltage: 5V or 3.3v

 

Default operating voltage: 5V

 

Baud rate: 50~2Mhz

 

Check: odd, even, no, mark

 

Operating system: Windows xp,7.8.10

 

Working temperature: - 40 to 85 ° C

 

Data bits: 5,6,7,8bits

 

Stop digit: 1,2

 

 

                        

Payment & Checkout

 We accept Alipay, West Union, TT. All major credit cards are accepted through secure payment processor ESCROW.

ESCROW will hold the payment until you receive your order with satisfaction.

Shipping

1.We ship your orders within 2-7 business days after the payment cleared.

2.In most times item will reach most of the countries within 8 to 15 working days. To some remote areas may take more than 20 working days.

3.If you don't receive the item after 30 days,  please contact us, we'll  investigate and solve the delivery problem.

Custom

1. The price you paid for the item excludes any customs tax. Our shop does not shoulder any duties in destination country.

2. We usually mark the goods as your need on the profomal/commercial invoice and we are trying to help to minimize or avoid any GST or V.A.T or other Import taxes, but we cannot guarantee no tax charges as it is depends on your Country’s Import Policy.

3. If your detail address belongs to remote area region, the express cost will be more high than standard.

4. Charges may apply if a delivery is rejected and sent back to our Office.

 Return & Refund

1.Only defective product will be offered exchange.

2.Defective products must be returned within 30 days from the date you placed your order.

3.It may take up to 7 business days to process your return after we receive your product.Return shipping will be paid by the Buyer.All returned items MUST BE in the original packaging and you MUST PROVIDE us with the shipping tracking number, specific reason for the return

4. We will refund YOUR FULL WINNING BID AMOUNT, upon receipt of the item in its original condition and packaging with all components and accessories included, AFTER BOTH Buyer and Seller cancel the transaction from aliexpress. OR, you may choose to have a replacement.

5. We will bear all the shipping cost if the product(s) is (are) not as advertised.

Feedback

 1.   We will leave Positive Feedback after receive the payment, Please do not forget to give us  and FIVE STARS on all of the Detailed Seller Ratings 

2.  If you are not satisfied with your shopping Experience,Please contact us to get a solution before you decide to leave a  neutral or  negative feedback, We will try our best to solve any problems for you as soon as possible,thanks.

3.   We will provide you service as best as we can, cause the feedback FIVE STARS  is what we are striving for. Please  email me through "My Messages" or "Mail" if you have any question about our listings or your purchase 

Contact Us

We welcome all messages anytime and happily respond to every message we receive,usually within 24 hours. 

Thank you for your support ,wish you have a nice day !