Nobby can I just say your making the classic mistake new folks make.? Your buying blind with no idea what your buying and that's a recipe for blowing money and frustratement with the result being either a dead machine or under performing machine or worse still a buggy erratic hair pulling bitch of machine.!!

I don't have any experience of that particular board but having lots of experience using most of the other motion control cards available for Mach3 I very much doubt this can do what it claims.!! Some of the things it claims it can do are not easily implemented and often require Artsofts involvement with making the plug-in to control it and I very much doubt they have had involvement in this.!!

For someone with experience then it would be worth checking out at this price but for someone with no experience then I'd strongly advise not to bother and stick with the traditional proven parallel port or spend that bit extra and buy a proven motion control card like the Smooth stepper etc.

IMO your in for a world of pain and uncertainty using this card, the list of troubles it could and probably will throw at you is huge and very much doubt the backup is there to help resolve any issues.!! . . . . Result being you'll waste weeks or months messing around and getting frustrated and then still rip it off and throw in cupboard.!! . . . . Trust me on this I have a cupboard full of " look's promising" and many many wasted hours of life I'll never see again.!! (and I'm supposed to know better and with experience . )

Now regards " Do I need anything else????" then besides the obvious drives, motors and PSU the minimum you'll want is an E-stop switch. Limits and homes switches etc are optional but recommended, you'll also want shielded cable for these.

Other than that you should be set to go just to try the motors etc but with that said.!!. . . . . What I strongly recommend you do is look at designing and building the control box so it's E-stop system is hardware driven and not just relaying on software to stop the machine in an emergency condition like what you will probably do at first. (Most new users do.!!)
It's not difficult to build a hardware driven E-stop system but I'm not going to get into it know but recommend you research and look/ask about it.