Sorry about the clickbait subject. A friend of mine wanted to get into Shadowrun and made a socially-and-physically awkward Troll Decker. When we had about 12K nuyen left, we started thinking if there's some cheap 'ware to put in him, like reaction enhancers or something, but then we saw this.
Implanted cyberdeck, capacity cost 4, 5K nuyen
Obvious cyberhand/foot, capacity 4, 5K nuyen
So what this means that he has a literal palmtop computer. Easily concealable with a glove and with DNI/Cybereyes/Glasses, not seeing the screen isn't an issue. It has an universal data connector as per the Cyberdeck description, which makes direct connectivity sneakier. The cyberlimb can be concealed with nothing but a glove, and even if the cyberhand is visible, it is just that. A cyberhand. And hacking devices and infiltrating slaved devices via wires? For example a door lock which you only need to place a hand on, or lean against the wall next to the lock, hand behind your back, sneakily inserting your fingertip with it's hidden data connector into the port. Or if you're lucky (or crazy) enough, you can hack someone's cyberlimb by grabbing it, hopefully before combat occurs.
+"Stealth-hacking" wired devices. A door lock that has a direct port? Just lean against the wall with your hand behind your back. Obviously this can be done with other stuff, but I like the idea and aesthetics.
I can't really think of disadvantages, other than for the fact he isn't much of an AR hacker due to his low initiative, which means he won't get more than one or sometimes two IP unless using Cram. But is this thing amazing or am I just gushing about something everyone else realized already?
tl;dr: Obvious cyberhand and implanted cyberdeck