"you may choose 1 of the top 5 cards of R&D and access it."
Can you guess what is missing from this card? Two words are conspicuously absent, what are they?
Give up? The answer is "look at". (I also would have accepted "reveal", although that's not how the templating normally goes) That's right, folks, without looking at the cards, you get to decide which of the top 5 cards you'd like to look at. "I'll look at.... number 4"
Is this good? Maybe, but not without some support. Accessing the top card of R&D is not much different from accessing a random card from R&D, if anything it's slightly worse, as the top card goes into the corp's hand, so that's extra info. So, when is this ability good?
If you have some info about the top few cards of R&D, accessing a particular one may be beneficial. Perhaps a digital friend or your bioroid programming have already told you that the top card isn't anything you want. Maybe you've already got R&D locked down, and your R&D Interface can only dig you so far. Looking one card further may help you grab that pesky final agenda.
Is this worth a card slot? Not in most decks, but it does have advantages. It's hardware, making it resistant to trashing, and it's install cost is priced just right, so it just may find a place in decks that already like hardware