Ps2 console reconizes adapter but wont connect tried adapted in diff machines and worked fine so i knoiw its not adapter also my switch sees ps2 when connected

Read the same topic "dell ac adapter can not be determined" on Dell.com and getsatisfaction.com. May it will help.
"The AC power adapter type cannot be determined. Your system will operate slower and the battery will not charge. Please connect a Dell 90W AC adapter or higher for best system operation"
AC power adapter can not be determind

Dell Inspiron 6400 AC Adapter

You should have received another 3 prong cable adapter with the PS3 - if so use this one

check to see if the adapter is working and that it is plugged in properly. if it is, your cord connecting your motherboard to your ps2 might be unplugged. to do this you need to open your ps2 ENTIRLY and plug it back in.

Have you tried rebooting once it is connected? Not sure if it makes a difference, but I know you can not hook up PS2 peripherals without rebooting.

Just plug the Guitar Hero drums wireless adapter into the usb port.Then press the power button on the drums to switch them on ,then hold down the button on the adapter and press the power button on the drums again .They should connect ,if not it may be the version of your playstation doesnt work with the Guitar Hero World Tour disk.

a number of things
1. that the ps2 is just too old to recognize the router.
2. that the router is not set up for DHCP (automatically assign an IP address)
3. your ps2 is configured for a static ip address

check those things... also, do you have other things connected by ethernet? if those work, the problem is on the ps2.

If you run your console through a router/gateway/switch it will resolve this issue and save a alot of heart ache.

check the inside of the PS2 or make sure the TV is ok or call sony up and use your warranty you should be able to

I'm fairly positive it wont work that way because the ps2 cannot reconize a ps3 game the same way the xbox wont recognize an xbox360 game.

There might be a problem with the keyboards PS2 port. You can bypass the PS2 port all together by buying a PS2 Y-adapter to usb port. This Y adapter will allow you to plug your PS2 mouse & keyboard into it and than you plug the other end into a free usb port. You do not have to plug the PS2 mouse in if you do not want to. Just plug in the keyboard. If your keyboard functions than there is a prolem with the keyboard's PS2 port. The PS2 Y-adapter to USB runs about $12.00 to $15.00. You can find one at Wallmart.