I plan on selling a lot of computer related parts... sadly I can not find any categories dedicated to computers much less any dealing with sub categories things like Networking, Storage, etc.
My suggestion is to amend Electronics to say Electronics & Computers and add a few computer sub categories... or go ahead and give Computer it's on category with appropriate sub categories.
As this site grows and expands it's user base it's going to need a place for this. Used computer parts is a HUGE market on other Auction sites.