Summary: I live abroad but was visiting Scotland for a couple of weeks and wanted an internet connection in the flat I was using. I didn't have a smart phone at the time so this seemed like a good option. I simply ordered a free sim card (any network will work) I used Giffgaff which offers good rates for internet. I paid for 1GB of data upfront which was more than enough for checking email and light internet surfing.
Summary: Great unit. Unlocked. Works fine with O2 and 3. Unfortunately the 1st unit failed. It would not detect a SIM installed. Amazon returns process gave me a replacement in a couple of days. The new one was fine. For interest, it seems there are two versions of this, based on the orientation of the SIM tray. My failed adapter wanted the SIM inserted sideways, (east-west) whilst the replacement orientation was inserted north-south.
Summary: I've struggled with this for a week trying to work out why it won't work with my Windows 8 laptop - it just doesn't get detected (well, USB storage gets detected but not the 3G modem). Checked the TP-link web site where it says compatible. Suddenly I spotted that it's the v2.0 that is Windows 8 compatible, whereas I was shipped the v1.1. Returning.
Summary: i work away from home a lot. some hotels have wifi but their range into the room can be questionable. So I bought this along with the TP-Link TL-MR3040 Portable Battery Powered 3G/3.75G Wireless N CABLE Router and connected it to the 3 network/ o2 network/ or whatever network in the country I am in.. easy to set up! a true life saver!
Summary: Mobile connectivity via USB dongle is nothing new, but having said dongle not locked to a specific network sim is very hard to find. The darn things are exorbitant (bent a Vodaphone Huawei and it cost me a tenner more for a replacement) This works plug and play. Vodaphone gives pretty good coverage so I had no discernible difference. TP link gives a very wide range of compatible networks globally on its site.
Summary: The device works well and gives a fast, responsive internet connection (even on O2, which when using my SIM card, is limited to ordinary "3G" service at the moment.) The driver/utility software is well designed. This was a most pleasant surprise to me as most hardware manufacturers (especially modem manufacturers) concentrate on hardware specifications to such an extent that they usually bundle the most awful, outdated, functionally inadequate and badly designed...
Small dongle, works with UK networks right out of the box
J. Murdoch, Amazon
16 March 2013
Summary: Personally tried and tested with SIM cards from: - Three (3UK) - Vodafone - O2 Great SIM-free solution. If you buy one from somewhere like CarPhone Warehouse, the danger is that it might be locked to one network. This isn't. I have added a photo - find it on the top left of this page. Dongles seem to have gotten smaller in the last 5-10 years. Note: I got it to work with Windows but NOT Mac.
Summary: What is a USB adapter I hear you ask? If a device you need to interface with doesn't have the necessary connection ports then you can hook it up via a USB adapter (like connecting an RGB cable to a SCART adapter to make it fit your TV). This TP-Link product, shaped and sized like a large memory stick, is built to fit SIM cards and micro-SD cards. If this is an interface you need then don't hesitate to buy. Just don't mistake it for a memory stick.