I believe this is what you need.
http://www.radioshack.com/product.as...Fid=960%2D0419
Keep in mind that computer is about 8 years old. Thats Ancient in computer terms, It'd be like expecting compusa to stock pentium 1 processors. Apple stores didnt even exist when that came out. So of course they would need to order it, not sure why it'd take them an hour, i assume the person in charge of ordering wasnt there at the itme and wouldnt be until 9. Either way a quick trip to radioshack should solve your proble
Didnt notice this at first but the radioshack site doesnt mention it is for the PowerMac 4400, but i'm pretty sure it is.