ieee 802.3af

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Demo 08: Green Plug debuts universal power supply

Demo 08: Green Plug debuts universal power supplyUSB somehow became the "universal" power supplyhttp://blogs.zdnet.com/Ou/?p=467USB somehow became the "universal" power supply. 802.3af is also another "universal" power supply. Oh what I wouldn't give for a laptop that could sip power from 802.3af or full blow 802.3at to get full...

Tags: power supply, Green Plug, IEEE 802.3af

Discussion threads 2008-01-29

The dream of the universal power connector becoming a reality

Ive dreamed of a universal power connector for small electronic devices for years but Ive come to the conclusion that it will never happen because there is simply too much money to be made in selling proprietary power adapters. But in a strange turn of events, I may be...

Tags: Consumer electronics, Networking, Mobile/Wireless, Infrastructure, Hardware, Energy efficiency

Blog posts 2007-04-11

802.3af Power Over Ethernet on the cheap

802.3af Power Over Ethernet on the cheapBeg to differ (of course, what else would you expect?!)"[i]You can't do advanced functions like VLAN separation on a cheap switch like this to separate your Voice devices from your data network[/i]"[url=http://www.geek-pages.com/articles/latest/dd-wrt_-_setting_up_a_separate/isolated_vlan_on_port_4_with_dhcp.html]fyi[/i], you can do VLAN on a cheap ($59) Linksys WRT54GL.But this whole...

Tags: LANs, VLAN, Power over Ethernet, IEEE 802.3af

Discussion threads 2007-02-02

802.3af Power Over Ethernet on the cheap

Anyone interested in IP Telephony or remote video cameras that draw power over an Ethernet cable has to be interested in some cheap 802.3af PoE Power Over Ethernet gear. Well I found just the thing with this AirLink 8 port 10/100 Ethernet switch with 4 802.3af PoE ports on...

Tags: Security, Infrastructure, Networking, Fun Stuff, Hardware, VoIP, IEEE 802.3af, PoE

Blog posts 2007-02-01

Add power with a homemade 802.3af compliant wireless networking device

This chapter excerpt from Wireless Hacks: Tips & Tools for Building, Extending, and Securing Your Network explains how to insert DC voltage into a standard Ethernet cable. Since June 2003, when the IEEE ratified the 802.3af standard for Power over Ethernet PoE, several prominent manufacturers have released...

Tags: IEEE 802.3af, Network, O'Reilly Media Inc., Wireless Networking, Ethernet, Wi-Fi, Wireless, Networking

Book chapters 2006-01-18

Power Over Ethernet (PoE): The IEEE 802.3af Standard for Power Distribution in Ethernet Networks

Local networks today cannot be imagined without Ethernet anymore. The protocol, developed in the mid 70s in the U.S., is very popular among network administrators thanks to its simple installation, hassle-free maintenance and comparably low costs. However, an increased deployment of wireless transmission technologies like Wireless-LAN, Bluetooth or DECT, let...

Tags: IEEE 802.3af, Network, Power Over Ethernet, Reichle & De-Massari, Ethernet, Networking, Network Technology

White papers 2003-01-09

Additional Resources

D-Link Xtreme N Duo Media Router DIR-855 - wireless router

We pitted the D-Link Xtreme N Duo Media Router DIR-855 against the only other true dual-band router we've reviewed, the Linksys WRT610N. The DIR-855 beat the WRT610N in overall throughput performance, but its design and desktop setup application couldn't compete. Both routers offer about the same range; the WRT610N provides...

Tags: Home networking, Routers & switches, Network technology, NETWORKING, WCN, wireless, wireless router, D-Link DIR-855, D-Link Systems, router, Linksys WRT610N

Product reviews 2008-07-18

Toshiba Satellite L355D-S7815

Note: This review is part of our Back-to-School 2008 roundup, covering specific configurations of popular laptops that can be found in retail stores.By virtue of its broad, 17.1-inch display, the $699 Toshiba Satellite L355D-S7815 stands out among budget back-to-school laptops (most of which feature 15.4-inch displays). But that feature is...

Tags: Notebooks, Network technology, Toshiba Corp., Satellite L355D-S7815, satellite, laptop computer, Toshiba Satellite

Product reviews 2008-07-18

Sony's Centrino 2 laptop lineup

Details of Sony's new laptops have been trickling out for several weeks, but Sony held off on an official announcement to coincide with Intel's Centrino 2 launch this week. Sony introduced four new VAIO lines ranging from the 3-pound Z-series ultraportable with a 13.1-inch display to the...

Tags: Sony Corp., IBM zSeries, Hard Drive, Sony Vaio, Intel Centrino, Memory, Microsoft Windows Vista, Intel Core 2 Duo, Series, Microsoft Windows Vista Home Premium, Graphics, Laptop Computer, Intel Corp., SP1, SR Series, Microsoft Windows, Microsoft Windows Vista (Longhorn), Desktops, Processors, Operating Systems, Software, Hardware, Semiconductors, Components, John Morris

Blog posts 2008-07-16

Linux 2.6.26 kernel update released

 Linus Torvalds quietly released another update to the Linux kernel over the weekend that offers better support for kernel-based virtual machines, a kernel debugger, improved webcam support and new support for the One Laptop Per Child architecture.  Version 2.6.26 was released on Sunday, July 13. What's most...

Tags: Kernel, Linux, Open Source, Operating Systems, Software, Paula Rooney

Blog posts 2008-07-15

Why Flash and Silverlight will save the web

Why Flash and Silverlight will save the webnone issueI thought that parts of flash Flex were open source and parts of silverlight are too. as these platforms evolve, open standards will be tacked on them. SilverLight, my opinion, really needs HTML display support built in so W3 standards...

Tags: Channel management, Quality, Microsoft Silverlight, Web, standards

Discussion threads 2008-07-15

Sony unveils 'world's first 16.4-inch notebook'

Sony unveiled what they're calling "the world's first 16.4-inch wide multimedia notebook" yesterday, a laptop packed with the promise to allow users to view HD movies "the way they were meant to be seen" -- which is a subtle hint that yes, this notebook comes with Blu-ray tech: Part...

Tags: Sony Corp., Notebooks, Hardware, Notebooks & Tablets, Andrew Nusca

Blog posts 2008-07-15

2nd-generation Intel Classmates reviewed

I just love these little laptops, so here's another repost while I've "gone fishin'". Intel recently sent me two examples of their second-generation Classmate PC for testing. The Classmates include numerous improvements on their already well-thought-out first-gen machines and mark the first versions that we can...

Tags: Intel Corp., Intel Classmates, Microsoft Windows, Corporate Communications, Memory, Mesh Networking, Notebooks, Operating Systems, Software, Marketing, Semiconductors, Hardware, Components, Networking, Notebooks & Tablets, Christopher Dawson

Blog posts 2008-07-15

ZT Affinity 7225Xi-35

The $750 ZT Affinity 7225Xi-35 is a fairly ambitious lower-midrange PC. This fixed configuration includes a lower-end quad-core chip, 4GB of memory, and a discrete graphics card. The result is solid everyday performance, and if you need a basic, capable desktop, this system will serve. Its lack of 64-bit Windows...

Tags: Desktops, Processors, Microsoft Windows Vista (Longhorn), Network technology, ZT Affinity 7225Xi-35, Velocity Micro Vector

Product reviews 2008-07-14

Palm Treo 800w (Sprint)

The world may still be all abuzz with iPhone 3G talk, but believe it or not, there are other smartphones out there and Sprint has just landed a pretty darn good one. Today, Palm and Sprint unveiled the Palm Treo 800w, a Windows Mobile 6.1 smartphone targeted at business users....

Tags: Smart phones, Cellular phones, Handhelds, Keyboards, Sprint Communications, Palm Treo, Palm Inc., smart phone

Product reviews 2008-07-14

Dell Inspiron 1525

Note: This review is part of our Back to School 2008 roundup, covering specific configurations of popular laptops that can be found in retail stores.As middle-of-the-road as a laptop gets, Dell's Inspiron 1525 is an excellent go-to choice for basic computing, especially if you take the time to configure a...

Tags: Notebooks, Processors, Dell Inspiron, Intel Core 2 Duo, Dell Computer Corp., Intel Corp.

Product reviews 2008-07-11

HP Pavilion dv2915nr

Note: This review is part of our Back to School 2008 roundup, covering specific configurations of popular laptops that can be found in retail stores. Designed for multimedia users, HP's Pavilion laptops have always combined eye-catching looks with such entertainment-oriented features as touch-sensitive media controls and dual headphone jacks. Those...

Tags: Desktops, Engineering, dv2915nr, HP Pavilion, battery, Hewlett-Packard Co.

Product reviews 2008-07-10

Velocity Micro Vector Campus Edition

We normally have good things to say about Velocity Micro's Campus Edition back-to-school desktops. This year's model, the $999 Vector Campus Edition, leaves us disappointed because of its uninspired configuration. We still find Velocity Micro's desktop design among the best in the industry, and this system's visual appeal and...

Tags: Processors, Network technology, Microsoft Windows Vista (Longhorn), Velocity Micro, Velocity, Vector Campus Edition

Product reviews 2008-07-10

Belkin unveils new router and Powerline adapters

Belkin today announced two pretty cool networking products—a new router and Powerline adapters—that each have a unique and very useful new feature. But you'll have to wait a few months to get your paws on them. I really like the new N+ Wireless Router because it includes...

Tags: Belkin Corp., Router, Adapter, Powerline, Networking, Rik Fairlie

Blog posts 2008-07-10

Microsoft says it's time to stop worrying about Vista - Does that make you feel any less worried?

Microsoft says it's time to stop worrying about Vista - Does that make you feel any less worried?There are still issues...Network performance still needs work.File copy performance still needs work.The ghost town that is Ultimate Extra's needs to start giving us what we were promised and paid $100 extra for.I...

Tags: Operating systems, Microsoft Windows Live, Microsoft Windows, Microsoft Corp., operating system, Microsoft Windows Vista

Discussion threads 2008-07-09