User's Manual

Physical Description
17
Ports
The SDA-4S adapter provides ports on the front panel, which are described in the table below:
Port Interface
4 x 8-pin RJ-
45
10/100BaseT with subscriber's network (supports Auto Negotiation and
MDI/MDI-X automatic crossover, allowing connection of straight-through or
crossover cables)
15-pin D-type
(female)
10/100BaseT with BSR
AC power
socket
Subscriber's power outlet (110-240 VAC, 1A, 50/60 Hz, 50W)
Note: The ports of the SDA-4S models support Auto Negotiation, allowing automatic
configuration for the highest possible speed link (10BaseT or 100BaseT), and Full Duplex or
Half Duplex mode. In other words, the speed of the connected device (e.g. PC) determines
the speed at which packets are transmitted through the specific SDA-4S port. In addition, the
SDA-4S ports support MDI/MDI-X automatic crossover, allowing connection to straight-
through or crossover cables.
LEDs
The LEDs description is the same as for the SDA-4SDC below.