USB Cable Tester with 2.4" Color Screen for eMarker Reading, PD 3.0/3.1 Detection, Resistor and Continuity Check, Compatible with Lightning, Type-C, Micro-B 2.0/3.0, and Mini-B Cables

This is a very nice device and provides a lot of useful information. It is easy to use and easy to read. It comes with a small instruction booklet that is quite clear. The basic process is to connect both ends of your cable to the device and slide a small switch to the desired power source (included AA battery or external USB C power source). There are four pages of information and you step through them by pressing a small button. The first page gives you a summary of the protocols supported (e.g., USB 2.0, 3.2, 4 and Thunderbolt). Note that it does not report the "generation" of USB 3.2. Your computer might have USB 3.0, 3.1, 3.1 gen 1, or 3.2 gen 1 interfaces - these are all equivalent to 3.2 gen 1 (5 Gbps) and the "USB 3.2" indicator that will light for cables that support that. However, it also will light for USB 3.1 gen 2 and USB 3.2 gen 2 (10 Gbps), and for USB 3.2 gen 2x2 (20 Gbps) cables. The fact that 3.2 lights up indicates it's at least 5 Gbps but might be more. The second page shows the wire connection list between the two ends of the cable. The third page shows some resistance and latency information. The fourth page shows data from the "e-marker" chip, if present. These chips are embedded in some USB C cables. If present, the e-marker will report the max data rate and the max charging power supported. If you have USB A-A or USB A-C cables, or USB C-C cables without e-marker chips, you won't be able to tell whether they are rated for 5 (gen 1) or 10 (gen 2) or 20 Gbps (gen 2x2). If you have a cable with a chip, you will see the maximum data rate on the fourth page. Note also that if you want to evaluate a USB A-A cable, you'll need a USB A to C adapter plug. The unit has a wide variety of USB 2.0 connectors but only one Type A USB 3 connector. To perform the tests, both ends of the cable have to be connected to the device so you must be able to adapt a Type A connector on one end of the cable to a Type C. Overall I recommend this, but I wish it could tell which USB A-A 3.x cables support 5 (gen1) or 10 Gbps (gen 2) interfaces. I suspect it is technically impractical to determine that in a low cost device. I found that almost all of the USB C "charging" cables I have lying around have no e-marker chip and no data capability at all or just USB 2.0 480 Mbps. An e-marker chip is required for any cable that supports 60W or greater charging; any cable lacking the chip must necessarily be rated for <60 Watts, but you cannot tell whether it's 15, 20, 30W, etc. Lastly, the device comes with an AA battery. You can use that to power it, or you can plug in a power source via a USB C cable.

Cables, Cables, Cables! Cables have gotten a lot more sophisticated over the years. It’s no longer just wires connecting two ends. Many modern cables include internal circuitry, chips, and e-markers that tell your devices what they can handle in terms of charging and data transfer. This little tester removes the uncertainty of trusting cable descriptions. It works with USB-C, Micro-B, and Mini-B cables, and can check continuity, data capability, and resistance. It also reads USB-C e-markers to show power delivery and data transfer capabilities, which is very helpful when sorting through a drawer full of mixed cables. What I like: - Works with more than just USB-C cables, including Micro-B and Mini-B - Reads USB-C e-markers to identify supported charging and data specs - Checks for continuity and resistance to verify cable integrity - Compact, easy to power with either USB or AAA batteries - The color screen is bright and clear, with an intuitive menu system It doesn’t test real-time charging performance, and that’s fine since that’s not what it’s designed for. I use another simple tester for that. This one is for verifying specs and quality, and it does that job perfectly (see pictures). If you have lots of cables and want to know exactly which ones are high-quality or support fast charging, this is an excellent tool to have on your bench or desk.

This is really a cool device. Shows tons of useful information you did not know before and enables you to select the right cable for the right purpose. Light, small, easy to use, but still very useful.

It's a good way to know which cables to throw away, either because they have bad wires or are just old. Three criticisms. 1. It's a bit pricey. 2. It goes through AAA batteries quickly (at least the rechargeables). 3. It didn't come with the USB Cable Manual that Treedix has for its more 'primitive' USB Cable Tester. On the plus side, the E-marker chip and the information that comes with it are excellent.

For the price, ease of use, and functionality this thing is worth it to sort through the mountains of usb cords we all have and identify their specifications.

Clear and bright screen. Decent built quality. Great price for what you get. Lots of information in an easy to understand format. Fast and easy to use. Able to test a plethora of different cables. Fast delivery. Would buy from seller again.

Like most people I have a pile of USB-C cables - and by this I mean cables that have a USB-C connector on one end and more or less any connector on the other end. But there's no way to tell by looking at the cable what the maximum data rate is that it can support or how much power (watts) it can transmit. Sadly, the USB committee never came up with some sort of labeling standard that would allow one to determine what a cable was capable of. As time moves forward more things are using USB-C as the power supply connector which is a good thing. The bad thing is that some of them require more than the 5 volt, 3 amp capability supposedly supported by every cable. Try charging your computer with a generic gas station cable and see how that works. This was the best solution I could find which gives a clear and quick analysis of what you have. Supports lots of different kinds of connectors. Easy to understand the display. There are more expensive solutions on Amazon so this is the best value I could find. There are also cheaper ones that are hard to use which are just a bunch of LEDs without much in the way of telling what they mean. And those don't read the e-marker chip so they are much less useful. I also like the face that it tells the resistance of the cable. All other things being equal, a lower resistance is always better for a charging situation. I do wish that the little selector button the side was slightly larger. It's functional but kind of tiny.

Device is easy to use. Helped me sort my usb cables by potential use and identify the capabilities of unmarked cables.

Es una excelente herramienta, tengo demasiados cables en casa y pues ya con éste equipo ya podré clasificar si es para datos de baja velocidad, alta velocidad o simplemente cable de carga.

Item is as described. Fast delivery. It is a bit expensive but display the necessary info about the cables. I wished the device can update future firmware when technology evolved. Thank you very much.

One of the best purchases if you use lots of different Usb cables and devices. There are Soooo many reasons why certain cables don’t work. Usb is “less a standard” and “more a lottery” but this makes it simple to check and label every cable for it’s suited purpose.

J'ai pu faire un bon ménage dans mes nombreux fils usb accumulés