Usb 3.1 gen2 type a actual speed
The reason for this is that we have to make sure the speed rating of the ports are at least on par with the cable we are testing to avoid the ports being the bottleneck.
Usb 3.1 gen2 type a actual speed Pc#
By Reddit user u/pcman2000įor real-world testing, you need a PC or Mac and a fast external NVME SSD drive that both have a USB-C USB 3.2 Gen 2 (formerly USB 3.1 Gen 2) port (Thunderbolt 3 is even better). If your USB-C to USB-C cable has built-in E-Mark chip, you can use our POWER-Z FL001 SUPER or POWER-Z KM001 USB tester to read the E-Mark chip and get the USB specification. If your USB-C to USB-C cable is USB-IF certified, then you can check out the logo on the connector (as follows) to get a quick understanding at its data transfer speed. However, if you want to hook your laptop with an external GPU, a Thunderbolt 3 (40Gbps) cable is the one to get. Thunderbolt 3 (40Gbps) USB-C to USB-C cables (passive cables shorter than 0.5m/1.6ft, or active cables longer than 0.5m/1.6ft, active cables lack backward compatibility with USB 3.x)įor most cases, a USB 3.2 Gen 2 (10Gbps) USB-C to USB-C cable (formerly USB 3.1 Gen 2) offers decent data transfer speed without breaking the bank. Thunderbolt 3 (20Gbps) USB-C to USB-C cables (passive cables longer than 0.5m/1.6ft) USB 3.2 Gen 2 (10Gbps) USB-C to USB-C cables (formerly USB 3.1 Gen 2, support 20Gbps with upcoming USB 3.2 Gen 2x2 devices) USB 3.2 Gen 1 (5Gbps) USB-C to USB-C cables (formerly USB 3.1 Gen 1, support 10Gbps with upcoming USB 3.2 Gen 2x2 devices) USB 2.0 (480Mbps) USB-C to USB-C cables (the most common ones) There are FIVE different kinds of USB-C to USB-C cables with various speeds from low to high as follows: So definitely check the current rating (3A or 5A) of the cable when you want fast charging high-power devices like MacBook Pro.ĭata transfer is when things get messy. Or a Thunderbolt 3 cable that supports 5A/20V (100W) charging. But for high-power 20V/5A (100W) charging, you need a 5A-rated USB-C to USB-C cable that contains E-Marker chip to identify the cable and its current capabilities. All USB-C cables must be able to carry a minimum of 3A current (at 20V, 60W). So we have to know what we want, in two aspects: charging and data transfer.Ī charger powers your device as fast as your cable allows. That's why we have so many USB-C to USB-C cables with different specs covering all price points. The main reason behind this complex is that although USB-C opens tremendous possibilities, if a manufacturer decides to packs all those specs and features inside a cable, the cost would be too high for average consumers.
In contradiction to the unified USB-C standard, the situation of its cables is extremely confusing for average consumers, prosumers even. You can fast charge your smartphone, tablet, and laptop, or, transfer data at high speed, all using the same USB-C to USB-C cable.