Cisco Systems is expected to report strong fourth-quarter earnings later today after the markets close, which should be another boost to the tech market.

The Internet computer-networking equipment maker is being buoyed by a return to spending by customers eager to upgrade after recession pullbacks.

Wall Street expects San Jose, Calif.-based Cisco (CSCO) to earn 42 cents per share with $10.9 billion in revenue. In the same quarter a year ago, its net income was 19 cents per share–adjusted earnings were 31 cents–on $8.5 billion in sales.

Either way, that’s a big improvement.

But analysts also expect Cisco to have an even better outlook for 2011, as spending on Internet infrastructure grows. That includes everything from data centers, to routers and switches, to all kinds of networking equipment.

In other words, CEO John Chambers gets to crow a little bit.

Cisco stock, which has been slightly down recently, closed at $24.31, down 1.9 percent, or 46 cents, yesterday.

As BoomTown reported earlier today, Yahoo Japan confirmed it would switch its search technology and paid search provider to Google from Yahoo.

The move is a definite blow to Yahoo’s new search and advertising alliance with Microsoft (MSFT), although Yahoo (YHOO) sought to minimize the damage in a statement (which you can read below in its entirety).

But make no mistake, given the huge Japanese market: It’s Googzilla totally wiping the floor with MicroHooSoftra.

While it might seem unusual that Yahoo Japan will be using Google’s search, the company is not actually owned by Yahoo, which holds a 35 percent stake.

SoftBank Corp., the giant Japan-based Internet service provider and cell phone provider, has a stake of around 40 percent in Yahoo Japan.

Both SoftBank Founder Masayoshi Son–one of the first key investors in Yahoo–and Yahoo co-founder Jerry Yang sit on the board of Yahoo Japan, which is operated independently as a separate publicly traded company run by President and CEO Masahiro Inoue.

Now that Yahoo Japan and Google (GOOG) have announced their engagement–in a statement at the time of Yahoo Japan’s first-quarter earnings announcement–it is certain that Microsoft will move to stop deal from gaining regulatory approval in Japan, even though a Google spokesman told BoomTown it had already consulted the proper authorities in Japan and had gotten no objections.

Still, I would not expect Microsoft to settle for that, and it is likely to do some lobbying
much as it did successfully when Google tried to enter into a similar deal with Yahoo itself in the U.S. in 2008.

That deal failed after government opposition to the creation of a near-monopoly in search in the U.S. became clear.

In Japan the combination is even worse, with the pair controlling almost the entire market share of search there, both paid and algorithmic.

In search query volume, according to one recent report, Yahoo Japan currently has just over a 53 percent share of the search market and Google has just over 38 percent.

Other polls differ, but it all spells an overwhelming and definite monopoly when combined.

Coincidentally, Bing just entered the Japan market with its branded search, but it has only a small share there of almost three percent.

The same market share among the big players holds in paid search too, with Yahoo Japan and Google controlling almost the whole thing between them.

Maintaining a modicum of competition in Japan was Yahoo’s to lose. And lose it did.

After Yahoo and Microsoft struck their wide-ranging search and online advertising partnership last year, Yahoo Japan–which now uses Yahoo technology for algorithmic and paid search–was then free to pick whatever search service it wanted.

Most expected it to use Microsoft’s Bing technology, which will be powering Yahoo in the U.S. by the end of the year, as well as in many other countries where Yahoo operates.

But, because Yahoo Japan is its own entity, any such deal needed to be negotiated among the parties, putting Yahoo Japan in play, much as if it were AOL (AOL) or News Corp. (NWS) unit MySpace in the U.S.

Investors are sure to ask what Yahoo management was doing as the Google effort took shape.

Those efforts obviously paid off, despite a declaration by Yahoo Japan’s Inoue in an January interview with a Japanese news organization that he was not impressed with some other Google services, such as its Street View mapping service.

Thus, the fallout from this is likely to be tough on Yahoo and also its nascent search relationship with Microsoft.

Yahoo Japan said the date of the switch was yet to be determined.

Here’s the statement from Yahoo on the changeover:

Yahoo! Japan announced that it has chosen to implement Google as its backend algorithmic search engine and paid search infrastructure. Yahoo! Japan made this decision as an independent and separate publicly traded company, in which Yahoo! holds a 35% equity interest. We amended our agreement with Yahoo! Japan as a result of this decision, and we do not anticipate that this amendment will have a material financial impact on our revenues. We will provide support, as required by our agreement, for the search experience Yahoo! Japan has chosen for its business, and we will continue to partner closely with Yahoo! Japan in other areas including mail, messenger, mobile, our content properties and more.

This decision by Yahoo! Japan does not impact the global rollout and implementation of the Yahoo! search alliance with Microsoft, except in the Japanese market. We remain confident in our transition plans for the search alliance, are driving innovation in the user experience around search on the Yahoo! network, and continue to be committed to our alliance with Microsoft.

Probably not. And that could be a problem.

The higher the current rally takes the semiconductor stocks–the SMH, the Semiconductor HOLDRS, is up 18.5 percent over the last seven sessions–the more you can expect the Street to dig into the question of whether there has been any real change in demand beyond inventory restocking. Auriga USA analyst Daniel Berenbaum took up the question yesterday; he says signs of true improving end demand are scant.

Today, Avi Cohen, head of research at Avian Securities, takes a look, and reaches the same conclusion.

Read the rest of this post

But several companies now sell wireless mice designed especially for laptop users for whom the laptop touch pad just won’t do. These mice are small, sleek, colorful gadgets that more fashion-conscious computer users can happily show off in an airport, in a coffee shop or on campus.

See a chart comparing the three mice

This week I tested three entry-level mobile mice designed for laptops, from Logitech (LOGI), Microsoft (MSFT) and Kensington Computer Products Group. These $30 mice include a USB receiver that plugs into a laptop, allowing the mouse to work wirelessly. When not in use, this receiver fits snugly beneath the mouse, turning its power off to save battery as it snaps into place. These mice are also somewhat smaller than regular mice so they can easily slip into a laptop bag.

Mobile mice are now more stylish than the traditional desktop mice, and like laptops and digital cameras, come in various shapes and colors. The mice I tested are available in pink, white, red, blue, orange and gray. Next week, the Microsoft mouse I used will be available in shades of pomegranate, aloe, dragon fruit (dark pink) and milk chocolate; a khaki-colored shade called crème brûlée will follow in June.

I tried Logitech’s $30 V220 Cordless Optical Mouse in black, Microsoft’s $30 Wireless Notebook Optical Mouse 3000 in aloe, and Kensington’s $35 Ci75m Wireless Notebook Mouse in orange. To gain some perspective on high-end mobile mice, I also looked at two pricier options from Logitech: the $50 V470 Cordless Laser Mouse with Bluetooth (instead of a USB receiver) and the $70 VX Nano Cordless Laser Mouse.

My vote for a favorite low-end mobile mouse had me struggling between portability and comfort. But overall, I found that the Logitech V220 offered the best combination of small size and usability. The Microsoft mouse was also comfortable to use, but its slightly bulkier size made it less portable, and it didn’t feel as sturdy as the Logitech. While the Kensington was the flattest and most portable, it wasn’t as comfortable to use as the Logitech or Microsoft mice.

To conserve battery, all three of these mice go into low-power mode after 10 minutes of nonuse, but none of them turns off completely. Battery indicators light up when juice is running low. According to company estimates, the Microsoft mouse has a battery life of over six months and the Logitech mouse has a battery life of up to six months. The Kensington mouse’s battery life was estimated to be three months. I didn’t use any of them long enough to prove the company claims.

These mice are compatible with Macs and PCs, and are plug-and-play — meaning you don’t need to install any additional software to make them work. I used each on laptops running Mac OS X and Windows Vista without any problems. The Microsoft and Logitech mice also can work with their own special software programs, but the extra features, such as reassigning a mouse button to open an application, aren’t really necessary for the average user.

The $30 Logitech V220 fit comfortably in my hand, with rubber grips on its sides and a generously sized, smooth-gliding rubber scroll wheel that made it easy to use. This scroll wheel can be nudged to the left or right for horizontal scrolling, a feature found on most of Logitech’s mice.

Unlike the Microsoft and Kensington mice, which show flashing red sensor lights, the Logitech uses an invisible optic sensor. This sounds cool, but because the mouse doesn’t use any lights, it can be left on accidentally. I did this a few times before remembering to stow the USB receiver in the mouse to automatically turn off its power.

Of the three, the Logitech mouse was the only one with a manual on/off switch — so you can turn it off without snapping the USB receiver into place in the mouse. This could save frequent travelers from having to detach the USB receiver every time they want to turn off the mouse, and could let people keep the receiver plugged into the laptop.

Kensington’s $35 Ci75m was the flattest mouse by far, making it a cinch to slip it into the outside pocket of my already full laptop bag on a train trip to New York. And this mouse has a bonus feature: It can work wirelessly or with a USB wire, which wraps up inside the mouse and serves as a backup in case the mouse runs out of battery. I tested this by removing the batteries and using only the USB wire, and it worked like a charm.

I also liked the way the Kensington USB receiver disappeared into the body of the mouse, while the Microsoft and Logitech receivers protruded a bit when stowed, adding to the thickness of the mouse when tucked into a laptop pocket.

But though this bright orange mouse received approving feedback from passersby, it wasn’t all that comfortable to use after a while. Its flatness saved room in my bag, but didn’t give my hand much support. It also felt flimsier than the Logitech, and its small wheel wasn’t as satisfying to use.

I received early test units of Microsoft’s $30 Wireless Notebook Optical Mouse 3000 in aloe, pomegranate and milk chocolate.

This mouse has rubber sides for a better grip, like the Logitech, and an arched shape for comfort. Its wheel is slightly smaller than Logitech’s, though its overall size was bigger and more like that of a regular mouse — not one designed specifically for mobile use. But even though the Microsoft mouse was larger, it didn’t feel as solid as Logitech’s; rather, it felt more like the thin Kensington. Its right and left buttons felt less stable, and its wheel didn’t roll as smoothly.

I did like Microsoft’s nod to new colors, and the aloe — a cool hue of green — was my favorite.

For people who don’t mind spending a little extra money on a mouse, the $50 V470 Cordless Laser uses Bluetooth, eliminating the need for a USB receiver altogether. It took only a couple seconds to pair this mouse to a MacBook with built-in Bluetooth, and it worked smoothly. A manual on/off switch on this mouse’s underside can help to conserve battery.

The $70 Logitech VX Nano Cordless Laser is sleek with shiny black accents and a silver-edged wheel. The “Nano” in this mouse’s name refers to its ultra tiny USB receiver, which sticks out only about a quarter of an inch when plugged in, so it can be left in a laptop at all times for ease-of-use. If needed, this receiver can be hidden away in the cavity of the mouse, under a snap-on lid. I used the VX Nano to glide around Web pages and Word documents with buttery smoothness.

No matter what mouse you choose to use with your laptop, most will be considerably more comfortable than touch pads and trackpoints, especially while working on long, mouse-intensive projects. But of the three lower-end mobile mice, the Logitech V220 Cordless Optical Mouse delivers the best combination of comfort and transportability.

The chart below (click on it to make it larger) compares features of the three mice described in this column.

Email mossbergsolution@wsj.com

Like any network switch, the Nexus 7000 controls and directs the flow of data between connected computers. But unlike any network switch, it can transfer data at 15 terabits per second, which–depending on whatever silly illustrative metric you prefer–is fast enough to either:

• copy all the searchable Web in less than eight minutes;
• download Wikipedia’s database in 10 milliseconds;
• download 90,000 Netflix movies in less than 40 seconds;
• run 5 million concurrent high-quality videoconferences between New York and San Francisco;
• or send a two-megapixel digital photograph of CEO John Chambers to every human being on earth in 28 minutes.

The company claims it can, anyway. “It isn’t often you get to do a clean-sheet design of a system, and that is what we have done over the past four years,” Doug Gourlay, senior director of marketing in the Data Center Solutions unit at Cisco, told SearchDataCenter.com. “The Nexus series is analogous to the Toyota creating the Prius; we have created a new class of data-center switching. We made Ethernet lossless.”

Neat.

For Cisco, which is pushing to increase its presence in the data center and virtualization markets, the Nexus 7000 could be a big winner. “If it works, Cisco would mark off a hugely strategic niche for itself, as a kind of king of virtualization,” Peter Burrows writes in BusinessWeek. “That’s the name of a technology that’s risen to prominence in recent years within pockets of the data center. VMWare, for example, has become corporate tech’s new darling, thanks to software that lets companies spread work among all of their available servers, rather than have them sit idle waiting for their particular job to be called. In storage, gear from companies like Brocade plays a similar role. But until now, no company has figured out a way to easily coordinate these various pools of virtualized gear.”