The 918 Spyder will be powered by a unique plug-in hybrid system that will include a high-revving, mid-mounted V8 engine with capacity of more than 4.0 liters and producing at least 500 horsepower.

ENGADGET: Porsche opens 918 Spyder plug-in supercar pre-orders, $845,000 gets you a ticket to ride

The Mac uses only plug-in memory modules, its operating system automatically recognizes all the memory present, and all Mac software can share it.

WSJ: Here's How to Survive Shopping for a PC

Simply plug in the AR audio system to any 12-volt outlet, connect it to your WiFi network and instantly stream music wirelessly from any iPad, iPhone, or iPod touch in your network.

ENGADGET: Acoustic Research unleashes pair of audio docks in AirPlay and Bluetooth flavors

With a VESA mount, you can hang it in your bedroom and use Windows Media Center to pull in content from your main PC or even plug in a digital cable tuner and use it as a stand-alone entertainment system.

ENGADGET: Maingear Solo 21 receives a makeover, $899 all-in-one PC is now fully upgradable

The BeagleBone Camera Cape, the newest cape plug-in board, eliminates the need for cameras to consume sometimes scarce USB ports and reduces total system power consumption.

ENGADGET: BeagleBone gets plenty of expansion options with new 'cape' add-ons

In 2002, Boston's Logan International Airport tested facial-recognition software, but pulled the plug after cameras failed to recognize airport employees whose photos were in the system.

WSJ: Police Adopting iPhone-Based Facial-Recognition Device by BI2, Raising Civil-Rights Questions

We have agreed to address a set of next-generation trade issues, including removing frictions in the global supply chains, helping small and medium-size enterprises grow and better plug into the global trading system, and adopting smart, market-oriented innovation policies.

WHITEHOUSE: President Obama Welcomes Leaders at APEC Summit