\begin{table}%T3
\caption{\label{transfer}Data transfer rate for different port architectures.}
%\centering
\par
\begin{tabular}{lc}
\hline \hline
Type & Data transfer rate \\
 & (Mbit s$^{-1}$) \\
\hline
Serial & 0.115 \\
Parallel Port EPP/ECP & 0.5--1 \\
Firewire & 200 \\
USB 2.0 & 480 \\
Ethernet & 10/100/1000 \\
\hline
\end{tabular}
\end{table}