User Manual

20 Proprietary and Confidential
Where to put the SOMAport 140
Installing the SOMAport 140
Maximum cable lengths
The different devices you connect to the SOMAport 140 require different types
of cables. Each type of cable has a recommended maximum length. Cables that
are longer than the recommended length can cause performance degradation.
If you have a number of devices that are distributed throughout your home or
office, place the SOMAport 140 closest to the devices that have the shortest
maximum cable length, as shown here.
Cable Type Devices Maximum Length
Telephone
(RJ-11)
Phones, fax machines, dial-up modems 600 m (2000 feet)
Ethernet (RJ-
45)
Ethernet-compatible PCs and hubs 100 m (328 feet)
USB USB-compatible PCs and hubs 5 m (15 feet)
Serial Older PCs that don’t support Ethernet or USB; 15 m (50 feet)