Short answer: No. They are different and not compatible.
Long answer: If the USB 2.0 device happens to be a hard drive that also has an esata port, then you could use the esata port instead.
eSATA is faster than FireWire and firewire is faster than USB.
esata-fire wire-usb
USB
eSATA is up to six times faster than USB or FireWire
eSATA is the fastest of the three.
There are 3 USB ports on the HP Pavillion DV4-1430US, one of which is shared with eSATA.
This model has 4 USB ports. The doubles as a eSATA port. This model also comes with a one year hardware warranty as well as a 30 day free software support warranty.
An Input/Output Panel, which can be found on either the front or back of your computer. This panel usually contains USB Ports and both audio- and microphone ports. In some cases there is a Firewire and/or eSATA connector as well.
USB ports work by transfering iformation through a wire(basic) For more info go to wikipeddia or another site
yes
eSATA, Expresscard/54 and USB
same as usb 3.0 (3 GBits/S)