ahh well **** dude, its SO-DIMM RAM so yeah that fits into a laptop (and I now see where you confirmed it to be so-dimm but I read the sentence wrong)....the only thing you gotta worry about is if your laptop is new enough to support DDR2.....the only reason I had said it's physically impossible is from people saying "you need sodimm" which I thought meant that you had regular desktop RAM...no need to get all "meh why cant people search jeez, flippin idiot" napoleon dynamite on me. Besides I could easily say the same to you and say google up your title Dell Inspiron 9300 and look at the specs which say:
"RAM technology DDR SDRAM "
Notice how that does NOT say DDR2 like your RAM specs are......wont work.......of course theres the ever popular throw it in and see if it boots method as well.
but theeeeeeeeeeen on another site which is dells homesite:
it says "256 MB of DDR2 SDRAM standard, upgradeable to 2 GB maximum" which does confirm DDR2 capabilities....other site SUCKS then, so then yes it should work unless your laptop is a FREAKtop or something
256 MB of DDR2 SDRAM standard, upgradeable to 2 GB maximum
Optional DDR2 dual-channel SDRAM
2 SoDIMM sockets, both are user-accessible
Dell makes it sound like theres both desktop RAM slots AND SO-Dimm slots....but yeah...it should work