Those things like that are a total rip-off they maybe work sometimes but
most of the time you are just out of luck. If the VHS tape has any kind of
copy protection on it those kind of gadgets just will not transfer it but if it
is a home made tape it might or might not transfer it.
If you have a bunch of store bought and legally paid for copy protected VHS
tapes that are just lying around and going to waste then get yourself one of
the TV tuner cards from Hauppauge. I used one of them and my old VCR to
transfer all of my old copy protected VHS to the computer hdd and then I just
trans coded them into DVD format and burned them to DVD's.
Here is a pretty nice one that isn't all that expensive @ $44.99 + $6.98 Shipping
Hauppauge WinTV-HVR-1250 - White Box 1187 PCI-Express x1 Interface - OEM
Same as above but retail boxed with a Remote Control
for about $7.58 more @ $51.99 + $7.56 Shipping
You could always bring out the big guns and use this one here
Hauppauge Colossus - Record your high definition video gameplay and TV programs using H.2601414 PCI-Express x1 Interface
$149.99 + $7.56 Shipping