usb

At CES last month I encountered Digital Innovations' ChargeDr, a small USB dongle that promised to do the seemingly impossible: boost the power output of a typical USB port, thus allowing it to charge an iPad (or other tablet).

I got it home, tested it, and discovered that, hey, it actually works! Technically speaking, there's no actual power boosting going on, but who am I to argue with this weird science? Without the dongle, my iPad says "not charging." With it: "charging."

And my tests bear out the claim. My iPad 3 went from 30 percent to 75 percent in about 2.5 hours. Not bad for a lowly USB port.… Read more

Let's do some math, shall we?

When it comes to portable storage, you can get a 64GB USB 3.0 flash drive for $39.99 shipped. Or you can take advantage of RedTag's today-only deal: a Western Digital My Passport 320GB USB 3.0 hard drive for $39 (plus $1.95 for shipping).

Update: Dang! Already sold out. It's worth checking back throughout the day in case RedTag releases more inventory. But, interestingly, I'd say few people were scared off by the drive being a refurb.

Pricewise, they're a wash. But the Western Digital drive … Read more

MacFixIt Answers is a feature in which I answer Mac-related questions e-mailed in by our readers.

This week, readers wrote in with questions about a system not loading past the gray Apple screen, an external DVD player not working, how to switch to internal speakers with headphones attached, and trouble enabling X-Ray folder view in the Finder. I welcome views from readers, so if you have any suggestions or alternative approaches to these problems, please post them in the comments!

Question: System not loading past the gray Apple screen MacFixIt reader Greg asks:

The Woo Audio WA7 Fireflies is one of the most beautiful audio products I've ever used. For my money it approaches a level of design grace comparable to that of Apple products. The 5-inch cube headphone amplifier has two vacuum tubes protected by a thick glass cover. The WA7 also has a built-in 32-bit/192kHz USB digital-to-analog converter (DAC) and lots of custom-made parts, including dedicated nickel alloy output transformers. There's a 6.3mm jack for home-style headphones, and a 3.5mm jack for portable ones. That's noteworthy, as few headphone amps have both jack sizes. The … Read more

Schiit Audio's very first product, the Asgard headphone amplifier, left me shaken and stirred back in 2010. It sold for $249, looked and sounded amazing, and to top things off, it was made in the U.S. -- not just assembled here. Most of the Asgard's parts are sourced from U.S. companies.

The Asgard is still in company's product line, and it's still $249. But Schiit has grown since then, and now offers a full line of more expensive headphone amps and USB digital-to-analog converters (DACs) -- which is great. But the company's most recent offerings sell for just $99 each! The Magni headphone amp and the Modi DAC are also made in America, and they sound spectacular. … Read more

LAS VEGAS--Want to charge your tablet while traveling? Hope you brought along a power brick, because a simple sync cable won't do the trick. That's because most laptop USB ports don't put out enough power for a tablet's big battery -- which is why you typically see a "Not Charging" message when you plug an iPad into a laptop.

The Digital Innovations ChargeDr promises to boost the power output of both laptop USB ports and wall adapters. Car chargers, too. The result: tablets can charge up to four times faster, phones up to two … Read more

LAS VEGAS--Amped Wireless has invested a lot in the new 802.11ac standard.

In addition to its first 802.11ac router, the RTA15, shown here at CES 2013, the company also showed off its first USB 802.11ac adapter and range extender, which may be the first 802.11ac range extender on the market.

The ACA1 High Power Dual Band AC Wi-Fi USB Adapter is designed to add long-range 802.11ac Wi-Fi connectivity to Windows or Mac computers. Amped Wireless says it features two high-gain, dual-band antennas and four total amplifiers to maximize performance. The adapter supports USB 3.0 … Read more

LAS VEGAS--If you are looking to upgrade your existing computer to support 802.11ac, without having to get a new computer entirely, here's something to look forward to.

Trendnet announced today at CES 2013 its first USB 3.0 802.11ac W-Fi adapter, the AC1200 Dual Band Wireless USB 3.0 adapter, model TEW-805UB.

This adapter card supports the dual-stream setup Wi-Fi standard and offers the cap speed of up to 867Mbps, when used with a 802.11ac router. It also works with existing Wireless-N routers and offers up to 300Mbps data rate in this case.

The new adapter … Read more

A new specification being pushed by the USB 3.0 Promoter Group offers double the current throughput rate while maintaining backward compatibility.

The latest generation of USB 3.0 technology supports data transfer rates of up to 5Gbps, and has been one answer to the increasing I/O bottleneck for many peripheral devices, especially high-speed storage solutions.

The backward compatibility of USB 3.0 with prior versions of the protocol has made it quite convenient for users, but it has competition from the Thunderbolt technology from Intel and Apple. Thunderbolt has quadruple the overall data throughput of USB 3.0 … Read more