That's a SATA drive, not a USB one. You could put it in a USB enclosure, but it's not going to be a huge amount faster than the HDD. SSDs are heaps better at random I/O than HDDs, but only a bit better at sequential, which is what it sounds like that is doing. You'll also chew through the P/E cycles very quickly.
How fast does it do save on the local HDD? Is the drive on a USB3.0 port?