Could use a li'l help to update Nuvi 465

I started a new gig within the company and find myself looking for a bunch of new places sometimes with just an address so I dug out my old Garmin from my OTR days.
It needs to be updated, hasn't been used in a couple years and I'm having some trouble figuring out just how to go about it.
I believe it's a Nuvi 465T although it just has 465 printed on the label, it is the trucker version and I bought it at a Love's truck stop back in 2010.
I've been to the Garmin express website and watched a video but it has you downloading software into your computer and plugging the GPS into the computer with a USB cord, the 465 I have has no USB port that I can find, just a smart card port.
If there is a USB cord with one end made for that port I don't have it.
Any help would be greatly appreciated here, I thought this thing could be updated via satellite, is that wrong?

 

Looking on eBay I found this,looks like it plugs in where the charger does and does updates,is this what I need?
http://www.ebay.com/itm/For-Garmin-...191?pt=LH_DefaultDomain_0&hash=item4854d1e557

 

Thanks guys,I figured I'd have to pay, might just do the lifetime update deal for $89.
I'll order to cord and git 'er done.
Thanks again!

 

Thanks, I already ordered it, no rush it should be here in a few days.
I live out in BFE anyway,35 miles to the nearest Walmart and 80 miles the nearest Pilot but thanks again.