Nortel Baystack 500 Model 501

Nortel Baystack 500 Model 501 ... IEEE 802.5 compatibility and featuring Nortel Networks' unique expansion and management capabilities, the hubs provide a powerful, standards-based platform that allows existing networks to easily grow without sacrificing existing investments. BayStack 500 Series Hubs offer 24 ports supporting host connections operating at both 4 and 16 megabits per second (Mbps). Optional front panel media dependent adapter (MDA) modules support additional station attachments or provide Ring-In/Ring-Out (RI/RO) ports for connecting to other Token Ring hubs, allowing the hubs to be easily integrated with any existing Token Ring network.