Super User Asked by user1201656 on January 3, 2022
I have a WD Passport SSD with usb 3.1. With the stock cable I transfer data at 380-420MB/s. (Limited to SATA)
I purchased a 10 foot usb C 3.1 gen 2 cable.
With this new cable I only transfer data at 38-42MB/s.
I also got a replacement cable when I complained about the first one, but it also transfers at 38-42MB/s.
Is there something I’m doing wrong here or are the cables just crap? At $40 each for these cables i expect better.
Motherboard im transferring to/from is Z270 ROG Code with current BIOS.
Also get the same speeds transferring to my Galaxy Note 10+ USB 3.1 internal storage. The cable does charge the Note with the 45W PD2 charger super fast charge 2.0.
The cable itself is advertised as:
USB C 3.1 Gen2 SuperSpeed 10Gbps E-Marker chip Fastest Charging USB Cable, Oculus Quest Link Compatible (White, 10 Feet)
40MBps is USB 2.0 speed.
This can mean only 2 things:
If both cables are plugged into the same USB ports (on device and PC), ant it works with one cable but not the other then you have the correct drivers but the cable is USB 2.0.
Answered by CrazyEyesDave on January 3, 2022
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