Here are some wireless aircards. By plugging these into the PCMCIA slot of yor laptop (or an available USB port) and obtaining a data account at AT&T or Verizon, you'll have internet access anyplace that there's a cell signal, which is excellent if that's what you need.
These cards are perfectly workable but (like almost everything I sell) are not new. They do not do 4G wireless speed, but rather 3G. However, for this type of internet this is not really a bad thing. True they are a bit slower than 4G but this type of cellular connectivity is so you can access the internet from anywhere, not to download movies or anything else requiring a great deal of bandwidth or speed. They are for reaching the home office from the field, entering data from a construction site, anything that requires connectivity away from your home or office. If you look at AT&T or Verizon's data wireless plans for these types of devices, they limit the amount of data that you can download quite a bit. For instance, AT&T's data plan limits you to downloading 5 GB's per month for everything, which is not a lot. Accessing this using 3G speed will actually allow it to stretch a bit further, as it'll take a bit longer to reach your 5 GB cap. Depending on the plan, Verizon gives you a range of download caps, from 100 MB's to 5 GB's but as you can see, none are huge. 3G is more than adequate to get you connected and do what you need to do without breaking your download limit.
Two of these models fit the PCMCIA slot of a laptop; one fits into an available USB port.
Want to be able to connect anywhere? Look no further!
SIERRA WIRELESS AIRCARD 881 AT&T
This is a Sierra Wireless Aircard model 881 that fits the PCMCIA ('PC Card") slot of yor laptop. What you'd need to do is to obtain a wireless account at AT&T, either prepaid or under contract, they will give you a SIM card like the ones they use in some cell phones. Then download and install AT&T's Connection Manager software (there are versions for Windows and Macintosh). And of course, buy one of these Sierra wireles cards and plug your SIM card into it. Then, when you plug your Sierra card into your laptop's PC Card slot, it will obtain internet cellularly and provide it to your laptop.
These will only work on AT&T's network. I've read that you can call AT&T, tell them you've bought a Sierra wireless aircard model 881 and need the unlock code for it. They will ask you for the IEMI number (it's is on the back of the card) and they will give you the unlock code for that device. Then google the procedure for unlocking it and you'll have a wireless card that will work on any compatible network. [Quad Band GSM/EDGE/GPRS (850/900/1800/1900 Mhz) and tri-Band 3.5G Network HSUPA/HSDPA/UMTS (850/1900/2100 Mhz technically)].
$12.00 (plus $3.00 shipping)
SIERRA WIRELESS USBConnect 881
For those that need internet connectivity but whose laptopops don't have a PCMCIA card slot, here's a version of the above aircard that fits into an available USB port. Because they plug into a USB port they will work on either a laptop or desktop computer. Designed to work on HSUPA networks, mobile users will experience up to 7.2 Mbps downlink and 2.0 Mbps uplink. These USB modems are a flexible solution and are compatible with both Windows and Mac operating systems by downloading the correct software, wvailable here.
Like the above aircard, you'll need to purchase a data plan from AT&T and obtain a SIM card, which fits in a slot inside the cover. You'll also find a bettery inside. You'll have to plug these into a USB port and charge the battery to see if it holds a charge. If not I googled them and they are between $2 and $4 dollars. This previously used AirCard is in good cosmetic and working condition. It may have some scuffs and scratches from regular previous use. Familiar USB connection; fully compatible with HSDPA, UMTS, EDGE, GPRS, and GSM networks Supported OS: Windows Vista, XP, 2000, and Mac OS X. Tri-band HSPA - 850/1900/2100 MHz Quad-band GSM/GPRS/EDGE - 850/900/1800/1900 MHz EDGE Class 12.
$15.00 (plus $3.00 shipping)
VERIZON BROADBAND ACCESS PC5750 PCMCIA CARD
For those of you with Verizon accounts or who prefer Verizon, here's a Verizon PCMCIA card. The UTStarcom PC5750 is a VERIZON Branded PC wireless broadband card with EV-DO rev A support for even faster downloads, and much faster uploads. The UTStarcom PC5750 will let your PC surf the web, access corporate networks and email as fast as 3.1 Mbps download and 1.8 Mbps upload(network dependent). Where EV-DO rev A isn't available, the UTStarcom PC5750 is backward compatible to EV-DO rev 0 and 1xRTT for full network coverage. You will need to sign up for a Verizon data plan located here, and youll need to load Verizon software onto your laptop, located here (Windows and Mac-compatible).
These are used but fully-capable, working and dirt-cheap. If you need to connect your laptop to the internet anywhere on a budget, here's your answer.
Quantities available, email with questions.
$5.00 (plus $3.00 shipping)