AmazonBasics 7 Port USB 3.0 Hub with 12V/3A Power Adapter better then StarTech

Movies drive is faster, think the read speed was 150 MB/s or less. Now it’s around 170 MB/s. Writing to a NVMe SSD, the bottleneck is USB and the movies drive.

The design kind of sucks on the Amazon branded one, the power port is on the side of it, and the port for the cable going to computer.

It’s $31.49 on Amazon.

My card reader might work better now too. The StarTech hub might have issues, I did buy it on eBay for less then other sites. Could be a compatibility problem.

150 might of been the write speed before. Need to find a big file on my NVMe SSD and copy it. 1.2 GB not big enough, didn’t say the speed. Using a terminal to copy, and the right command, might tell you. Good idea, use dd.

dd if=/dev/zero of=tempfile bs=1M count=10024 conv=fdatasync,notrunc status=progress
10408165376 bytes (10 GB, 9.7 GiB) copied, 69 s, 151 MB/s

10024+0 records in
10024+0 records out
10510925824 bytes (11 GB, 9.8 GiB) copied, 97.8338 s, 107 MB/s

Why did it say 151 MB/s while doing it, then after it was done 107 MB/s?

dd if=tempfile of=/dev/null bs=1M count=10024 status=progress
10471079936 bytes (10 GB, 9.8 GiB) copied, 62 s, 169 MB/s
10024+0 records in
10024+0 records out
10510925824 bytes (11 GB, 9.8 GiB) copied, 62.2381 s, 169 MB/s

That is after running “echo 3 > /proc/sys/vm/drop_caches” as root.

The speed said 107 MB/s, because it just sat there after it got to 10 GB, took a while for it to finish. That’s why I clicked enter, was wondering why it wasn’t done yet.