SFP-to-TTL v1.1 Adapter

SFP-to-TTL v1.1 Adapter

Breaks out a GPON stick’s 20 pins so you can flash firmware via an FTDI232

No soldering required

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Price: €20 (shipping not included)
French orders: See the Leboncoin listing
Shipping costs are calculated automatically by Leboncoin based on your delivery method.
International orders: If you can't buy from above listing, please contact me. See FAQ.

Description

The SFP-to-TTL v1.1 is a compact adapter that exposes the 20 pins of a GPON SFP module connector to make the 3V UART lines (TX, RX, VCC, GND) accessible. Perfect for:

  • flashing OpenWrt / Carlito / stock firmware
  • debugging the bootloader
  • grabbing serial logs without fiddly pogo-pins

Key features

FeatureDetail
Versionv1.1 (blue)
Exposed pins20 SFP connector pins (UART, I²C, GPIO, etc.)
SilkscreenRX⇆TX and TX⇆RX clearly labeled
SFP connectorHigh-quality Molex® SFP slot, direct module insertion
Power3.3 V via VCC pin (from FTDI or external source)
Dimensions41.25 mm × 22.5 mm

FAQ

How do I order?

  1. Click here to buy the SFP-to-TTL adapter on Leboncoin.
  2. Choose your shipping method; costs are shown before payment.
  3. Complete the transaction directly on Leboncoin.

If the listing is inactive, just message me on Leboncoin.

What else do I need?

  • A USB-TTL 3.3V adapter and 4 female–female Dupont cables
  • A USB cable for your computer
  • A compatible SFP/ONU GPON module (FS.COM, Huawei MA5671A, etc.)
  • A serial console app (screen, PuTTY, …)

Can I order outside of Leboncoin if I'm not based in France?

Sure! Please contact me with your basic information so that I can estimate shipping cost. Usually 5 to 8€ in EU.

Return Policy

We’re a small-batch maker and every adapter is carefully assembled and individually tested before shipping to guarantee it works as expected.

Because of the nature of this product and the fact that it’s intended for developers, we unfortunately cannot accept returns, exchanges, or refunds.

If you have any questions before ordering or need help using the adapter, feel free to reach out — we’re happy to assist you and make sure you get the right product for your needs.

Thank you for your understanding and support 🙏