The simplest way to connect a keyboard to your PC is to plug its cable into a USB port. Non-gaming keyboards are usually plug-and-play devices, with no additional software to install, so connecting the cable is all the setup you'll need. Gaming keyboards, by contrast, will typically work as soon as you plug them in, but most come with their own software that lets you adjust features such as onboard RGB lighting and the assignment of macro keys. (More on that in a minute.) Some cheaper gaming models may lack software and handle key backlighting and macros/shortcuts wholly through hardware. Besides transferring your keystrokes to the computer, a USB connection also powers the keyboard, so there are no batteries to worry about. Some premium gaming models with lots of customizable buttons and lights come with two USB cables, one for power delivery (and/or to feed an extra USB port or ports on the keyboard itself) and one for your data connection. This isn't usually a problem, since you'll likely be connecting one of these keyboards to a large gaming desktop with many available USB ports. If you want more freedom and less cable clutter on your desk, however, it's hard to beat a wireless keyboard. Wireless models transmit data to your PC through one of two primary means: an RF connection to a small dongle plugged into one of your PC's USB ports, or a Bluetooth connection with no dongles required. Each has its pros and cons. But if you want to reduce the number of cables on your desk and gain the flexibility to use your keyboard at a distance—whether it be in your lap at your desk or across the room—wireless is the way to go. Most wireless keyboards that use USB dongles transmit over the same 2.4GHz wireless frequency used for cordless phones and Wi-Fi routers. The dongle itself is usually a tiny rectangle—small enough to plug in and forget about. Not only is the dongle unobtrusive, but we find that the 2.4GHz signal tends to offer more stable connectivity than Bluetooth. Some manufacturers' USB dongles can control more than one device, meaning you can use a single adapter (and USB port) for both a wireless keyboard and wireless mouse, invariably from the same vendor. (Logitech, for example, refers to this setup as Logitech Unifying technology.) Bluetooth connections make sense in certain situations; they don't monopolize a USB port, and newer versions of Bluetooth are stable, easy to manage, and offer compatibility with additional mobile devices such as smartphones and tablets. In regular use, a Bluetooth connection gives you roughly 30 feet of wireless range, though we find that Bluetooth wireless keyboards tend to have briefer battery life than USB dongle devices. However, new innovations such as hand-proximity sensors boost battery life compared to older Bluetooth products, whose always-on link drained batteries quickly. Among the few major drawbacks of mainstream wireless keyboards is that few of them feature key backlighting, which hampers one of their most useful roles: playing games, typing emails, or controlling a home theater PC in a dim den or living room. If you do find a wireless model with backlighting, be prepared to change its batteries or recharge it frequently.