parallel and serial ports

Easy setup, I received this package and was eagerto install. Sharring a printer. One thing to mention it does require on regular printer cable and TWO male to male cables to hook two pc's up to one printer. So order an extra cable with it. Easy set up again, didn't have to install any HW for the printer. Seems to take jobs very fast.

The Bitronics Autoswitch works just as you'd expect. I boughtit at amazon.com to switch between a HP Laserjet 6L and an HP Officejet scanner/printer/fax... the Laserjet is my main printer, but occasionally I use the Officejet to scan pictures and the like. (And note that there's no problem using bi-directional devices like scanners.)

It works like a champ. No need to install the (optional) software, no need to plug it in-- just hook up the cables and you're good to go. You just press a button to switch between the two devices.

Only thing to know is that there's nothing "automatic" about this-- you need to do the switching yourself. The word "automatic" refers to another way you can use this switch-- to hook two PCs up to a single device. I don't need this capability, so I haven't tried it.

Good product.

I bought this model last year to switch between my HP Laser and Canon color ink jet. It's great -- very easy to switch back and forth, easy to hook up. I would recommend, however, purchasing the extra AC power plug (information on ordering should come with the AutoSwitch) -- without it I occasionally had problems with glitches in the data sent to one printer or the other.