With the DFE-690TXD's 4KB RAM data buffer, all incoming data is processed and stored into temporary memory and eventually filtered out, resulting in smooth data flow. The DFE-690TXD's extensive diagnostic LEDs show link connectivity for both 10Link/Activity and 100Link/Activity. Designed with a plug-and-play feature, the DFE-690TXD is simple to install and operate. With built-in hot swapping capabilities, the DFE-690TXD can be removed while the computer is still in operation.