SKU: 99958086890

Great Scott Gadgets Cynthion - All-in-One USB Multitool

$157.50 $175.00
Save 10%
No.2 Bestseller on salfueradeti.es >

Pay in installments of $43.75 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 5 - Aug 10

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Great Scott Gadgets Cynthion - All-in-One USB MultitoolAvailability: 1 Week Lead Time To order, please email us at contact@makersupplies. sg Making USB Accessible Cynthion is an all in one tool for building, testing, monitoring, and experimenting with USB devices. Built around a unique FPGA based architecture, Cynthions digital hardware can be fully customized to suit the application at hand. As a result, it can act as a no compromise High Speed USB protocol analyzer, a USB research multi tool, or a USB

Availability: 1 Week Lead Time

To order, please email us at [email protected]

Making USB Accessible

Cynthion is an all-in-one tool for building, testing, monitoring, and experimenting with USB devices. Built around a unique FPGA-based architecture, Cynthion’s digital hardware can be fully customized to suit the application at hand. As a result, it can act as a no-compromise High-Speed USB protocol analyzer, a USB research multi-tool, or a USB development platform.

Out-of-the-box, Cynthion acts as a USB protocol analyzer capable of capturing and analyzing traffic between a host and any Low-, Full-, or High-Speed (“USB 2.0”) USB device. It works seamlessly with our open-source analysis software, Packetry.

Combined with LUNA gateware and Facedancer libraries, Cynthion becomes a versatile USB research and development tool. Facedancer makes it quick and easy to create or tamper with real USB devices—not just emulations—even if you don’t have experience with digital-hardware design, HDL, or FPGA architecture!

No extra cables are included! You may need a variety of USB A & C cables to connect to your computer/target.

 

Core Features

Cynthion is a fully reconfigurable test instrument that provides all the hardware, gateware, firmware, and software you need to work with—and, indeed, to master—USB. Below are a few of the challenges to which you can apply your Cynthion:

  • Protocol analysis for Low-, Full-, and High- speed USB. Cynthion provides everything you need for passive USB monitoring. With Packetry USB analysis software, Cynthion provides everything you need for passive USB monitoring.

  • Creating your own Low-, Full-, or High- speed USB device. LUNA provides Amaranth gateware that allows you to create USB devices in gateware, firmware, or a combination of the two. Using the Facedancer library, you can create or emulate real USB devices in high-level Python.

  • Meddler-in-the-Middle (MitM) attacks on USB communication. Cynthion hardware can function as a "USB proxy" capable of transparently modifying USB data as it flows between a host and a device. Each board’s three USB Type-C connections allow for simultaneous, high-speed proxying while maintaining a high-speed connection to the host. As a result, you can proxy a connection with or without the help of a host PC.

  • USB reverse engineering and security research. Cynthion hardware and LUNA gateware represent a purpose-built backend for research tools like Facedancer and USB-fuzzing libraries, thereby simplifying the emulation and rapid prototyping of compliant and non-compliant USB devices. Unlike other USB-emulation solutions, Cynthion-based hardware is dynamically reconfigurable, so it gives you the flexibility to create any endpoint configuration and engage in almost any USB (mis)behavior.

 

An Open-Source USB Protocol Analyzer

Image: Packetry interface

An Educational Platform for Learning About USB

Image: A fully open-source set of training materials walk you through the basics of USB - including descriptions and diagrams of the basic elements of USB, such as USB Transfers pictured here.


Resources

 

For assistance with Cynthion use or development, please look at the issues on the Cynthion GitHub project. This is the preferred place to ask questions so that others may locate the answer to your question in the future. For hardware issues use the cynthion-hardware repository.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 99958086890

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 7 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
L
L. A. Jones
Draper, US
★★★★★ 4
Wood & Metal Desk Organizer – Sturdy but Assembly Needed
This desk drawer organizer and pen holder is made from wood and painted metal and looks nice once assembled. The type of wood isn’t specified, but it feels heavy and solid. The pen holder requires assembly, which can be a bit tricky since no instructions are included. You need to attach the two wooden sides to the wooden bottom first, then add the metal sides. The screws are included, along with two mini screwdrivers, but the tools are very small and the wood is very hard, so I needed help to finish assembly. Once assembled, the items look attractive and feel sturdy. My organizer arrived with a small chip in one of the metal pieces, leaving a spot where the black paint is missing, which is noticeable. The organizer works best as shown in the listing photos — for larger items like glasses, wallets, cell phones, or keys. The sides of the organizer aren’t completely flush with the bottom, so very small items like paper clips could get stuck or fall through. To protect desktops, the organizer comes with four stick-on felt pads for the corners, and the pen holder has a rectangular felt pad that you attach yourself. Overall, it’s attractive, sturdy, and useful, but assembly can be a little challenging.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 2, 2026
J
JScoobs
Lake Worth, US
★★★★★ 5
Desk organizer
I like the wood and metal look. The pencil cup was easy to put together and it is sturdy. It is great to have some organization on your desk.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 24, 2026
L
Verified Purchase
lele
Belleville, US
★★★★★ 5
Love this protection plan
Quick and easy. My daughter's cracked her screen on her phone, as soon as it happened I went on the app, filed the claim. Ten minutes later I received the email with the shipping lable. The following day I dropped the phone off at ups and 4 hours later I received the digital gift card. Ive filed several claims since getting the protection plan and with four kids its definitelysomething im glad to have especially since i dont have to buy a protectionplan for each item now. I have filed claims for electric scooter the stoped working for no reason, my son's phone stopped charging, my oldest daughter cracked her phone screen, my son's video game controllers up and died and each time it was quick and easy and no fuss
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
S
Verified Purchase
Shance L McGuffey
Port Orchard, US
★★★★★ 5
If they can't fix it they will replace it.
This protection plan that i pay monthly for paid for itself ten fold. My 3D printer just quit working and after the manufacturer warrenty had ran out at that. I submitted my claim they emailed me a shipping label in which I shipped out my printer that same day. Two days later they received my printer determined it couldc not be fixed and sent me a Amazon gift card for the full price of my printer. Today I will be receiving my new 3d printer thanks to Complete Protect. I highly recommend anyone and everyone to purchase this policy. This warrenty is like having a home warrenty like Homeshield but for your electronics and probably other stuff that i just have not read to see what else. This insurance will save me so much money over the corse of this year and every year after that. Thank you Complete Protect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
M
Verified Purchase
Miguel Denyer
Pawtucket, US
★★★★★ 1
Don't waste your money - these people will not help you
On March 9th 2024, I purchased a MCombo Lift Chair costing $785. On the same day, through the same Amazon account (my PERSONAL account since I also have a business account), I purchased an Asurion Complete Protect policy at the cost of $16.99 per month plus taxes. About one month ago, a problem arose with the chair that required me to make a claim using the "Complete Protect" policy that I had purchased for that very item. The claim was initiated on January 1st, 2025 - On January 3rd, I received an email asking me for photographs showing the damage for which I was making a claim. I sent those photographs via email to the address provided on January 6th. On January 27th, having not received ANY response from Asurion, I contacted them via phone and was told that my purchase had been made with a business account, that it was being used for business purposes, and was therefore not covered. I assured the Asurion Representative that it was most certainly not a business use, and that the chair that I was claiming for had been purchased because I had extensive shoulder surgery done that made it impossible to get in and out of bed. After speaking (unsuccessfully) with the Asurion Rep, I then contacted Amazon Customer Service. I spoke with an Amazon Customer Service Representative on the phone who confirmed that I had in fact used my personal account to purchase the chair and the Asurion Complete Protect policy. That representative went on to send a message to Asurion on my behalf confirming that the purchase was for personal use and not business use. Asurion responded, asking me to call them with the order number for the Asurion purchase. The number I gave was the exact same order number on my order history, however, the Asurion Rep could not find it. I was finally able to discover that the order number in Asurion's system was entirely different and isn't even in the same format as an Amazon order number. Upon the Asurion representative finding my plan, she informed me that the chair was listed as being purchased for business use (despite Amazon confirming that it was NOT) but that I should give them "a couple of business days" to resolve the issue. Five business days later, still no response and so I called them again (Yesterday - February 1st 2025)... Lo and behold, I got the same crap yet again... the purchase was listed as business use and was therefore being denied, but she promised to remove the business use commentary and put the claim through again. Today, February 2nd, I called Amazon yet again to escalate and had to call THREE times because the first two calls resulted in me finally being connected to an Asurion representative (two different reps) and each time, the Asurion representative hung up the phone as soon as my name was mentioned. It has become clear to me that the Asurion "Complete Protect" policy is a SCAM - they will NOT take care of your issue, regardless of how long you've been paying. I have been paying every month since March 9th last year - so they've received over $170 from me thus far, with zero other claims, and if I am able to cancel right now, I will only receive $16.99 back. All I want, is the chair that I purchased the policy for coverage of, to be repaired or replaced. Asurion are NOT helping, and are actively avoiding contact. At this point, I am considering legal action against Asurion for fraud - perhaps even a Class Action. I'll wait and see if my issue gets resolved within the next 10 days or so.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 2, 2025

recommand products

Promoter Volumizing Eye and Lip Cream
95.00
O2 Tox Peel
60.00
Clear Body Therapy
105.00
Vita-Peptide Eye Gel
100.00
Allantoin
44.00