RAM -Random Access Memory
Usually the most upgradable thing in your laptop or portable device. Usually 1GB is a good amount of memory for running Windows XP and 2GB for Windows Vista, though there are many more variables to consider so this is a rough guide only. The more the computer memory, the more the pc will be able to cope with more windows open at once. So your web surfing, your media player and programs will operate more smoothly. Your antivirus and other secuity software will take fair amounts of memory so you need to compensate for that. Its always worth upgrading the memory on a machine, as soon as you get it, so you get the maximum benefit during the lifetime of the machine.
Ralink
Manufacturer of wireless cards
RMA
A number given by manufacturers in oder to process and track the return of a faulty device, stands for something like Return to Manufacturer Authorization..
Radio
The wireless technology used to transfer the wireless signal from your wireless router to your laptop or computer. Normally in the UK wireless runs on channel 1-13, and that channel 5 and 6 are the best. It makes sense if you live in an apartment block and 7 routers are all on the same channel.
RJ45
The same as a Network Port, or LAN, or 10/100 NIC. Its the backbone of the internet world is connected via RJ45 connections
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