I need a docking station for my HP Pavilion ze4400 where can I find one and what model is it? info please?

The HP F4811A Port Replicator (also called a docking station) can be found on Tech Excess selling for $152.21, however, it is temporarily sold out, but they do give an email address to ask when exactly they will be in stock and when you can receive it!
specifics are:
This combo could be a lifesaver and save you a load of $$$.  The HP F4811A Port Replicator (also called a docking station) features an AC power jack as one of its connections.  Instead of spending hundreds of dollars for a new motherboard that will allow you to plug in your AC Adapter directly to your laptop, simply dock your laptop on the F4811A docking station then connect your AC Adapter to the F4811A's power jack.  Voila, your laptop has power again and didn't break the bank. Not only is this an alternate solution for motherboard replacement, the F4811A docking station features a collection of ports which makes connecting your laptop peripherals and accessories a breeze.  You may read more about the F4811A below. The deluxe version of this combo also includes a new genuine HP lithium-ion battery.  This may be the next item to start to wear out on your laptop if it hasn't already.  Prepare for the future now and save on shipping by grabbing an extra battery while you're extending the life of your laptop.

If you are willing to buy a refurbished, you can get this at a really CHEAP price!  Ambry has a refurb one selling for $25.00!
specifics:
Warranty:  warranty information >
90 day limited product warranty
 
Shipping:  shipping information >
Usually ships in 2 - 3 business days if available
 
Returns:  return policy >
Product may be returned or exchanged only in accordance with the return policy

At Lapzone you can buy a new one selling for $139.00