Any number of things may be causing a slow data transfer.
Things to try:
11 Mbps
A wireless router "N" has one of the fastest speeds available. It is more costly than the basic wireless router speed of "G". To ensure getting the fastest speed, be sure both the wireless router and wireless card have the same speed. Most laptops with built in wireless cards only have a speed of "G". The network runs at the slowest speed that is being used. An upgraded card may be needed.
You will get speed of 802.11b.
A wireless card does not actually increase the speed of the connection on a laptop. The only thing that changes the speed is the actually internet itself. The average wrieless card though is about fifty dollars for a high quality one.
Sprint is the third largest internet service provider in the USA. When connecting your laptop to this wireless service from a broadband card, Sprint's download speed averages about 1 Mbps and 300 kbps for uploads. If you are lucky enough to be in the 4G network range, the speeds are faster. An average download speed ranges from 2.1 to 3.2 Mbps and 500 Kbps.
what is a wireless card
what is a wireless g card with bluetooth?
it is a wireless lan card
Yes it has a wireless card built in.
Yes a broadcom wireless card
An example of a broadband wireless card are the internet dongles such as the Sierra wireless card which one can buy to let one connect to a wireless internet connection
Adding an SD card will not improve your streaming quality. Your download speed and stream quality depends on your internet connection.