BlueRobotics BlueFathom-X Tether Interface (FXTI)
Description
- Provides topside enclosure to interface the BlueROV2 to a computer
- Contains a USB to Ethernet converter and a Fathom-X board
- USB-B connection on one side and a Binder 770 connector on the other
- Is included with the BlueROV2 but is also available separately
The BlueRobotics BlueFathom-X Tether Interface (FXTI) is a simple and expandable topside enclosure to interface with the BlueROV2 and other devices that use HomePlug communication technology. The FXTI has a USB-B connection on one side and a Binder 770 connector on the other. The USB connection provides power to the box and is internally connected to a USB to Ethernet adapter that is connected to a Fathom-X tether interface board. The interface board is connected to the Binder 770 connector for a clean connection to the tether.
This product works great as a clean connection from the computer to the tether, but it is designed to be highly expandable for other applications. The Binder 770 connector has leads for all 8 wires, providing full support for both the slim and regular Fathom tethers. Those leads are reconfigurable within the box so that you can quickly use an extra twisted pair from the tether for the Water Linked Analog Locator or any RS485 device.

Two additional holes are provided on the box and are sized properly to accept additional Binder 770 connector or our standard penetrators. Indicator lights on the top of the box show the “power” and “link” status from the Fathom-X board. The USB-B connection provides a solid connector that is unlikely to be damaged during transit or operation.
- 1 x Fathom-X Tether Interface (FXTI)
- 1 x 3 ft (1m) USB-A to USB-B cable
- Weight (without USB cable): 462 g, 1.02 lbs
- Enclosure Material: Anodized Aluminum
- Tether Connection: Binder 770 Bulkhead
- Computer Connection: USB Type-B Female Bulkhead Receptacle
- USB Cable Length: 0.91 m, 3 ft
- Communication: USB 2.0, Ethernet 10/100
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Refund Policy
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorization (RA) before initiating a return request.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at RoboItchi's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
- A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
- The RA number is valid for 30 days. The returned item must be received within that period.
- The RA number must be included with the return.
- Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
- Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RoboItchi's troubleshooting process or of a verified shipping error by RoboItchi.
- Refunds are processed within 7 days after receipt and inspection of the returned item.
- A ¥10,000 cleaning fee may apply to domestic robots returned in used or unclean condition.
- A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RoboItchi's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
- Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
- Consumables — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
- Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
- Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
- Build-it-yourself products and items requiring customer assembly — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
- Digital Goods, Software, and Apps — Final sale only, due to licensing restrictions.
- Clearance Items — Products identified as clearance or final sale, including end-of-life or discontinued items.
- Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
- On-Demand Items — Standard catalogue products not stocked by RoboItchi and ordered specifically to fulfill a customer request.
- Professional & Specialized Equipment — See the Professional & Specialized Equipment Warranty page and Professional & Institutional Buyers (B2B) section in the Terms & Conditions.
How to Request a Return Authorization (RA)
To request a return, submit a support ticket from your account under My Support Tickets to obtain a Return Authorization (RA) number. Returns without an RA number will be refused.

