Cabletron Systems 6H122-16 - Manual (Page 24)

Chapter 2: Network Requirements
2-2 6H122-16 User’s Guide
2.2 10BASE-T NETWORK
When connecting a 10BASE-T segment to any of the 6H122-16 ports,
ensure that the network meets the Ethernet network requirements of the
IEEE 802.3 standard for 10BASE-T. Refer to the Cabletron Systems
Cabling Guide for details.
2.3 100BASE-TX NETWORK
The sixteen fixed ports of the 6H122-16 provide an RJ45 connection that
supports Category 5 unshielded twisted pair cabling with an impedance
between 85 and 111 ohms. The device at the other end of the twisted pair
segment must meet IEEE 802.3u 100BASE-TX Fast Ethernet network
requirements for the devices to operate at 100 Mbps. Refer to the
Cabletron Systems Cabling Guide for details.
NOTE
The 6H122-16 is capable of operating at either 10 or 100 Mbps.
The module automatically detects the speed of the other device
and adjusts its speed accordingly.